Integer Overflow
Integer overflow occurs when an arithmetic operation produces a result that exceeds the maximum value a given integer type can store.
How It Works
Integer overflow occurs when an arithmetic operation produces a result that exceeds the maximum value a given integer type can store. In C/C++, this causes the value to "wrap around" to a small number—for example, if a 32-bit unsigned integer at maximum value (4,294,967,295) has 1 added, it wraps to 0. Attackers exploit this by providing carefully crafted input values that, when used in calculations, produce unexpectedly small results.
The most dangerous scenario involves memory allocation. An attacker supplies large values that overflow during size calculations (often when adding header sizes, element counts, or alignment padding), producing a small allocation size. When the program later writes the originally intended large amount of data into this undersized buffer, a heap overflow occurs. For instance: size = user_count * sizeof(struct) + header might overflow if user_count is sufficiently large, resulting in malloc() allocating a tiny buffer that subsequent operations overflow.
Integer overflows also enable logic bypasses. Length checks can be circumvented when overflowed values appear to pass validation. Loop bounds may become incorrect, causing excessive iterations or premature termination. Signed integer overflow (technically undefined behavior in C/C++) can flip positive values to negative, bypassing security checks that assume non-negative numbers.
Impact
- Heap buffer overflow: Undersized allocations lead to memory corruption, enabling arbitrary code execution
- Authentication bypass: Overflowed counters or size checks may skip security validations
- Denial of service: Invalid memory operations cause crashes or infinite loops
- Information disclosure: Incorrect bounds allow reading beyond intended memory regions
- Privilege escalation: Combined with memory corruption, can compromise system integrity
Real-World Examples
The OpenSSH authentication bypass (CVE-2002-0639) involved an integer overflow in challenge-response handling where the number of responses could overflow, allowing authentication bypass. The overflow caused allocation of insufficient memory, which subsequent code exploited to execute arbitrary code.
ImageMagick suffered multiple integer overflow vulnerabilities (CVE-2016-3714 and related) where maliciously crafted image files with extreme dimension values caused size calculations to overflow. This resulted in small heap allocations followed by large writes, enabling remote code execution through image processing.
The Linux kernel's do_brk() function (CVE-2003-0961) contained an integer overflow when calculating memory region sizes. Attackers could wrap the size value to bypass length checks and map memory at arbitrary locations, achieving local privilege escalation.
Mitigation
- Safe arithmetic libraries: Use compiler intrinsics (
__builtin_add_overflow) or libraries (SafeInt, Rust's checked arithmetic) that detect overflow - Pre-calculation validation: Check that operands won't overflow before performing arithmetic operations
- Compiler protections: Enable
-ftrapv(GCC) or/RTCc(MSVC) to trap signed overflow; use UBSan for detection - Use larger types: Perform calculations in 64-bit integers when operands are 32-bit, verify result fits before casting down
- Input validation: Enforce maximum reasonable values on user input before arithmetic
- Modern languages: Use languages with overflow checking (Rust, Swift) or arbitrary precision integers (Python, Java BigInteger)
Recent CVEs (2762)
A undefined behavior vulnerability exists in the Linux kernel's TTM (Translation Table Maps) memory management subsystem where shifting a signed 32-bit value by 31 bits during bit flag operations causes undefined behavior. This affects all Linux kernel versions using the affected TTM code path, and while the vulnerability itself is difficult to exploit directly, it can be triggered by local attackers with low privileges during GPU memory operations, resulting in denial of service through kernel panic or undefined system behavior. The EPSS score of 0.01% and lack of known public exploits indicate this is a low real-world exploitation probability, but the CVSS 5.5 score reflects the availability impact when triggered.
Ashlar-Vellum Cobalt VC6 File Parsing Integer Overflow Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Ashlar-Vellum Cobalt LI File Parsing Integer Overflow Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
In the Linux kernel, the following vulnerability has been resolved: drm/radeon: Fix integer overflow in radeon_cs_parser_init The type of size is unsigned, if size is 0x40000000, there will be an. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm) runtime. Rated low severity (CVSS 2.1), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
Integer overflow in the SVG component. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix possible underflow for displays with large vblank [Why] Underflow observed when using a display with a large. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: Fix OOB and integer underflow when rx packets Make sure mwifiex_process_mgmt_packet, mwifiex_process_sta_rx_packet. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
In the Linux kernel, the following vulnerability has been resolved: crypto: cavium - prevent integer overflow loading firmware The "code_length" value comes from the firmware file. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
In the Linux kernel, the following vulnerability has been resolved: ipv6/addrconf: fix a potential refcount underflow for idev Now in addrconf_mod_rs_timer(), reference idev depends on whether. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
Substance3D - Modeler versions 1.22.2 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could result in arbitrary code execution in the context of the current user. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Integer overflow or wraparound in Windows SPNEGO Extended Negotiation allows an authorized attacker to elevate privileges locally. Rated high severity (CVSS 7.8). No vendor patch available.
Integer overflow or wraparound in Windows Kernel allows an authorized attacker to elevate privileges locally. Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. No vendor patch available.
Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An integer overflow exists in the FTS5 https://sqlite.org/fts5.html extension. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable. No vendor patch available.
An integer overflow in the SMU could allow a privileged attacker to potentially write memory beyond the end of the reserved dRAM area resulting in loss of integrity or availability. Rated low severity (CVSS 3.9). No vendor patch available.
Failure to validate the address and size in TEE (Trusted Execution Environment) may allow a malicious x86 attacker to send malformed messages to the graphics mailbox resulting in an overlap of a TMR. Rated low severity (CVSS 3.0). No vendor patch available.
Insufficient parameter validation while allocating process space in the Trusted OS (TOS) may allow for a malicious userspace process to trigger an integer overflow, leading to a potential denial of. Rated medium severity (CVSS 4.1). No vendor patch available.
In lwis_test_register_io of lwis_device_test.c, there is a possible OOB Write due to an integer overflow. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
An integer overflow vulnerability exists in the ABF parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
An integer overflow vulnerability exists in the GDF parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Unlimited memory allocation in redis protocol parser in Apache bRPC (all versions < 1.14.1) on all platforms allows attackers to crash the service via network. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Integer Overflow vulnerability could allow attackers to cause unexpected behavior through arithmetic overflow.
ImageMagick is free and open-source software used for editing and manipulating digital images. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
An Integer Overflow or Wraparound vulnerability [CWE-190] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below, 7.2 all versions, 6.4 all versions, FortiProxy version. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable. No vendor patch available.
Integer overflow or wraparound in Windows Distributed Transaction Coordinator allows an authorized attacker to disclose information over a network. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Integer overflow or wraparound in the Linux kernel-mode driver for some Intel(R) 800 Series Ethernet before version 1.17.2 may allow an authenticated user to potentially enable escalation of. Rated low severity (CVSS 2.0). No vendor patch available.
Integer overflow or wraparound in the Linux kernel-mode driver for some Intel(R) 800 Series Ethernet before version 1.17.2 may allow an authenticated user to potentially enable denial of service via. Rated high severity (CVSS 8.4), this vulnerability is low attack complexity. No vendor patch available.
Integer overflow or wraparound in the Linux kernel-mode driver for some Intel(R) 800 Series Ethernet before version 1.17.2 may allow an authenticated user to potentially enable escalation of. Rated high severity (CVSS 8.8). No vendor patch available.
EDK2 contains a vulnerability in BIOS where a user may cause an Integer Overflow or Wraparound by network means. Rated medium severity (CVSS 6.3), this vulnerability is low attack complexity. No vendor patch available.
An integer overflow vulnerability in the loading of ExecuTorch models can cause objects to be placed outside their allocated memory area, potentially resulting in code execution or other undesirable. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An integer overflow vulnerability in the loading of ExecuTorch models can cause overlapping allocations, potentially resulting in code execution or other undesirable effects. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
NVIDIA Triton Inference Server for Windows and Linux and the Tensor RT backend contain a vulnerability where an attacker could cause an underflow by a specific model configuration and a specific. Rated medium severity (CVSS 4.4), this vulnerability is remotely exploitable. No vendor patch available.
NVIDIA Triton Inference Server for Windows and Linux contains a vulnerability where an attacker could cause an integer overflow through specially crafted inputs. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. No vendor patch available.
NVIDIA Triton Inference Server for Windows and Linux contains a vulnerability where a user could cause an integer overflow or wraparound, leading to a segmentation fault, by providing an invalid. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
NVIDIA Triton Inference Server for Windows and Linux contains a vulnerability where a user could cause an integer overflow or wraparound, leading to a segmentation fault, by providing an invalid. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability of insufficient data length verification in the partition module. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
Russh is a Rust SSH client & server library. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
A remote code execution vulnerability in Honeywell Experion PKS and OneWireless WDM (CVSS 9.4). Critical severity with potential for significant impact on affected systems.
CVE-2025-53630 is a critical integer overflow vulnerability in llama.cpp's GGUF file parsing function that can trigger heap out-of-bounds read/write operations, potentially leading to information disclosure, memory corruption, or remote code execution. The vulnerability affects llama.cpp versions prior to commit 26a48ad699d50b6268900062661bd22f3e792579, with a CVSS score of 8.9 indicating high severity. The network-accessible attack vector (AV:N) combined with low complexity (AC:L) means remote attackers can exploit this without authentication by supplying malformed GGUF model files.
CVE-2025-52520 is an integer overflow vulnerability in Apache Tomcat's multipart upload handling that allows unauthenticated remote attackers to bypass size limits and trigger denial of service. The vulnerability affects Tomcat versions 11.0.0-M1 through 11.0.8, 10.1.0-M1 through 10.1.42, 9.0.0.M1 through 9.0.106, and EOL version 8.5.0 through 8.5.100, requiring only network access with no authentication. With a CVSS score of 7.5 (High severity) and an attack vector rated as Network/Low complexity, this represents a significant availability risk for unpatched deployments.
Adobe Framemaker versions 2020.8, 2022.6 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Adobe Framemaker versions 2020.8, 2022.6 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
InCopy versions 20.3, 19.5.3 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Illustrator versions 28.7.6, 29.5.1 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Illustrator versions 28.7.6, 29.5.1 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
InDesign Desktop versions 19.5.3 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
In the Linux kernel, the following vulnerability has been resolved: ext4: inline: fix len overflow in ext4_prepare_inline_data When running the following code on an ext4 filesystem with inline_data feature enabled, it will lead to the bug below. fd = open("file1", O_RDWR | O_CREAT | O_TRUNC, 0666); ftruncate(fd, 30); pwrite(fd, "a", 1, (1UL << 40) + 5UL); That happens because write_begin will succeed as when ext4_generic_write_inline_data calls ext4_prepare_inline_data, pos + len will be truncated, leading to ext4_prepare_inline_data parameter to be 6 instead of 0x10000000006. Then, later when write_end is called, we hit: BUG_ON(pos + len > EXT4_I(inode)->i_inline_size); at ext4_write_inline_data. Fix it by using a loff_t type for the len parameter in ext4_prepare_inline_data instead of an unsigned int. [ 44.545164] ------------[ cut here ]------------ [ 44.545530] kernel BUG at fs/ext4/inline.c:240! [ 44.545834] Oops: invalid opcode: 0000 [#1] SMP NOPTI [ 44.546172] CPU: 3 UID: 0 PID: 343 Comm: test Not tainted 6.15.0-rc2-00003-g9080916f4863 #45 PREEMPT(full) 112853fcebfdb93254270a7959841d2c6aa2c8bb [ 44.546523] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 44.546523] RIP: 0010:ext4_write_inline_data+0xfe/0x100 [ 44.546523] Code: 3c 0e 48 83 c7 48 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 e4 fa 43 01 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 0f 0b <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 20 49 [ 44.546523] RSP: 0018:ffffb342008b79a8 EFLAGS: 00010216 [ 44.546523] RAX: 0000000000000001 RBX: ffff9329c579c000 RCX: 0000010000000006 [ 44.546523] RDX: 000000000000003c RSI: ffffb342008b79f0 RDI: ffff9329c158e738 [ 44.546523] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 [ 44.546523] R10: 00007ffffffff000 R11: ffffffff9bd0d910 R12: 0000006210000000 [ 44.546523] R13: fffffc7e4015e700 R14: 0000010000000005 R15: ffff9329c158e738 [ 44.546523] FS: 00007f4299934740(0000) GS:ffff932a60179000(0000) knlGS:0000000000000000 [ 44.546523] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.546523] CR2: 00007f4299a1ec90 CR3: 0000000002886002 CR4: 0000000000770eb0 [ 44.546523] PKRU: 55555554 [ 44.546523] Call Trace: [ 44.546523] <TASK> [ 44.546523] ext4_write_inline_data_end+0x126/0x2d0 [ 44.546523] generic_perform_write+0x17e/0x270 [ 44.546523] ext4_buffered_write_iter+0xc8/0x170 [ 44.546523] vfs_write+0x2be/0x3e0 [ 44.546523] __x64_sys_pwrite64+0x6d/0xc0 [ 44.546523] do_syscall_64+0x6a/0xf0 [ 44.546523] ? __wake_up+0x89/0xb0 [ 44.546523] ? xas_find+0x72/0x1c0 [ 44.546523] ? next_uptodate_folio+0x317/0x330 [ 44.546523] ? set_pte_range+0x1a6/0x270 [ 44.546523] ? filemap_map_pages+0x6ee/0x840 [ 44.546523] ? ext4_setattr+0x2fa/0x750 [ 44.546523] ? do_pte_missing+0x128/0xf70 [ 44.546523] ? security_inode_post_setattr+0x3e/0xd0 [ 44.546523] ? ___pte_offset_map+0x19/0x100 [ 44.546523] ? handle_mm_fault+0x721/0xa10 [ 44.546523] ? do_user_addr_fault+0x197/0x730 [ 44.546523] ? do_syscall_64+0x76/0xf0 [ 44.546523] ? arch_exit_to_user_mode_prepare+0x1e/0x60 [ 44.546523] ? irqentry_exit_to_user_mode+0x79/0x90 [ 44.546523] entry_SYSCALL_64_after_hwframe+0x55/0x5d [ 44.546523] RIP: 0033:0x7f42999c6687 [ 44.546523] Code: 48 89 fa 4c 89 df e8 58 b3 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 44.546523] RSP: 002b:00007ffeae4a7930 EFLAGS: 00000202 ORIG_RAX: 0000000000000012 [ 44.546523] RAX: ffffffffffffffda RBX: 00007f4299934740 RCX: 00007f42999c6687 [ 44.546523] RDX: 0000000000000001 RSI: 000055ea6149200f RDI: 0000000000000003 [ 44.546523] RBP: 00007ffeae4a79a0 R08: 0000000000000000 R09: 0000000000000000 [ 44.546523] R10: 0000010000000005 R11: 0000000000000202 R12: 0000 ---truncated---
In the Linux kernel, the following vulnerability has been resolved: i40e: fix MMIO write access to an invalid page in i40e_clear_hw When the device sends a specific input, an integer underflow can occur, leading to MMIO write access to an invalid page. Prevent the integer underflow by changing the type of related variables.
In the Linux kernel, the following vulnerability has been resolved: net_sched: sch_sfq: reject invalid perturb period Gerrard Tai reported that SFQ perturb_period has no range check yet, and this can be used to trigger a race condition fixed in a separate patch. We want to make sure ctl->perturb_period * HZ will not overflow and is positive. tc qd add dev lo root sfq perturb -10 # negative value : error Error: sch_sfq: invalid perturb period. tc qd add dev lo root sfq perturb 1000000000 # too big : error Error: sch_sfq: invalid perturb period. tc qd add dev lo root sfq perturb 2000000 # acceptable value tc -s -d qd sh dev lo qdisc sfq 8005: root refcnt 2 limit 127p quantum 64Kb depth 127 flows 128 divisor 1024 perturb 2000000sec Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0
CHMLib through 2bef8d0, as used in SumatraPDF and other products, has a chm_lib.c _chm_decompress_block integer overflow. There is a resultant heap-based buffer overflow in _chm_fetch_bytes.
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix error flow upon firmware failure for RQ destruction Upon RQ destruction if the firmware command fails which is the last resource to be destroyed some SW resources were already cleaned regardless of the failure. Now properly rollback the object to its original state upon such failure. In order to avoid a use-after free in case someone tries to destroy the object again, which results in the following kernel trace: refcount_t: underflow; use-after-free. WARNING: CPU: 0 PID: 37589 at lib/refcount.c:28 refcount_warn_saturate+0xf4/0x148 Modules linked in: rdma_ucm(OE) rdma_cm(OE) iw_cm(OE) ib_ipoib(OE) ib_cm(OE) ib_umad(OE) mlx5_ib(OE) rfkill mlx5_core(OE) mlxdevm(OE) ib_uverbs(OE) ib_core(OE) psample mlxfw(OE) mlx_compat(OE) macsec tls pci_hyperv_intf sunrpc vfat fat virtio_net net_failover failover fuse loop nfnetlink vsock_loopback vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vmw_vmci vsock xfs crct10dif_ce ghash_ce sha2_ce sha256_arm64 sha1_ce virtio_console virtio_gpu virtio_blk virtio_dma_buf virtio_mmio dm_mirror dm_region_hash dm_log dm_mod xpmem(OE) CPU: 0 UID: 0 PID: 37589 Comm: python3 Kdump: loaded Tainted: G OE ------- --- 6.12.0-54.el10.aarch64 #1 Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : refcount_warn_saturate+0xf4/0x148 lr : refcount_warn_saturate+0xf4/0x148 sp : ffff80008b81b7e0 x29: ffff80008b81b7e0 x28: ffff000133d51600 x27: 0000000000000001 x26: 0000000000000000 x25: 00000000ffffffea x24: ffff00010ae80f00 x23: ffff00010ae80f80 x22: ffff0000c66e5d08 x21: 0000000000000000 x20: ffff0000c66e0000 x19: ffff00010ae80340 x18: 0000000000000006 x17: 0000000000000000 x16: 0000000000000020 x15: ffff80008b81b37f x14: 0000000000000000 x13: 2e656572662d7265 x12: ffff80008283ef78 x11: ffff80008257efd0 x10: ffff80008283efd0 x9 : ffff80008021ed90 x8 : 0000000000000001 x7 : 00000000000bffe8 x6 : c0000000ffff7fff x5 : ffff0001fb8e3408 x4 : 0000000000000000 x3 : ffff800179993000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000133d51600 Call trace: refcount_warn_saturate+0xf4/0x148 mlx5_core_put_rsc+0x88/0xa0 [mlx5_ib] mlx5_core_destroy_rq_tracked+0x64/0x98 [mlx5_ib] mlx5_ib_destroy_wq+0x34/0x80 [mlx5_ib] ib_destroy_wq_user+0x30/0xc0 [ib_core] uverbs_free_wq+0x28/0x58 [ib_uverbs] destroy_hw_idr_uobject+0x34/0x78 [ib_uverbs] uverbs_destroy_uobject+0x48/0x240 [ib_uverbs] __uverbs_cleanup_ufile+0xd4/0x1a8 [ib_uverbs] uverbs_destroy_ufile_hw+0x48/0x120 [ib_uverbs] ib_uverbs_close+0x2c/0x100 [ib_uverbs] __fput+0xd8/0x2f0 __fput_sync+0x50/0x70 __arm64_sys_close+0x40/0x90 invoke_syscall.constprop.0+0x74/0xd0 do_el0_svc+0x48/0xe8 el0_svc+0x44/0x1d0 el0t_64_sync_handler+0x120/0x130 el0t_64_sync+0x1a4/0x1a8
Intelbras RX1500 Router v2.2.17 and before is vulnerable to Integer Overflow. The websReadEvent function incorrectly uses the int type when processing the "command" field of the http header, causing the array to cross the boundary and overwrite other fields in the array.
A specific flaw exists within the Bluetooth stack of the MIB3 unit. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow when receiving fragmented HCI packets on a channel. An attacker can leverage this vulnerability to bypass the MTU check on a channel with enabled fragmentation. Consequently, this can lead to a buffer overflow in upper layer profiles, which can be used to obtain remote code execution. The vulnerability was originally discovered in Skoda Superb III car with MIB3 infotainment unit OEM part number 3V0035820. The list of affected MIB3 OEM part numbers is provided in the referenced resources.
A specific flaw exists within the Bluetooth stack of the MIB3 infotainment. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow when receiving non-fragmented HCI packets on a channel. The vulnerability was originally discovered in Skoda Superb III car with MIB3 infotainment unit OEM part number 3V0035820. The list of affected MIB3 OEM part numbers is provided in the referenced resources.
An integer overflow in the image processing binary of the MIB3 infotainment unit allows an attacker with local access to the vehicle to cause a denial-of-service of the infotainment system.
An integer underflow in the image processing binary of the MIB3 infotainment unit allows an attacker with local access to the vehicle to cause denial-of-service of the infotainment system. The vulnerability was originally discovered in Skoda Superb III car with MIB3 infotainment unit OEM part number 3V0035820. The list of affected MIB3 OEM part numbers is provided in the referenced resources.
IBM Informix Dynamic Server 12.10,14.10, and15.0 could allow a remote attacker to cause a denial of service due to an integer underflow when processing packets.
CVE-2025-52566 is a signed vs. unsigned integer overflow vulnerability in llama.cpp's tokenizer (llama_vocab::tokenize function) that enables heap buffer overflow during text tokenization. This affects all versions of llama.cpp prior to b5721, and attackers can trigger the vulnerability with specially crafted text input during the inference process, potentially achieving code execution with high confidentiality, integrity, and availability impact. The vulnerability requires local access and user interaction but has a high CVSS score of 8.6; KEV status and active exploitation data are not currently available, but the patch exists in version b5721.
CVE-2025-52935 is an integer overflow/wraparound vulnerability in DragonflyDB's Lua struct module (lua_struct.C) that allows authenticated attackers with low privileges to trigger memory corruption, information disclosure, and potential code execution. The vulnerability affects DragonflyDB versions 1.30.1, 1.30.0, and 1.28.18, and carries a critical CVSS v4.0 score of 9.4 with high impact across confidentiality, integrity, and availability. No public exploit code or active exploitation has been confirmed at this time, but the authenticated attack vector and high severity warrant immediate patching.
High-severity integer overflow vulnerability in the V8 JavaScript engine within Google Chrome that enables out-of-bounds memory access through a maliciously crafted HTML page. The vulnerability affects Chrome versions prior to 137.0.7151.119 and requires only user interaction (clicking a link, visiting a page) with no special privileges needed. Successful exploitation allows attackers to read sensitive data, modify content, or crash the browser with a CVSS score of 8.8.
In the Linux kernel, the following vulnerability has been resolved: bpf: fix potential 32-bit overflow when accessing ARRAY map element If BPF array map is bigger than 4GB, element pointer calculation can overflow because both index and elem_size are u32. Fix this everywhere by forcing 64-bit multiplication. Extract this formula into separate small helper and use it consistently in various places. Speculative-preventing formula utilizing index_mask trick is left as is, but explicit u64 casts are added in both places.
In the Linux kernel, the following vulnerability has been resolved: drm/sun4i: dsi: Prevent underflow when computing packet sizes Currently, the packet overhead is subtracted using unsigned arithmetic. With a short sync pulse, this could underflow and wrap around to near the maximal u16 value. Fix this by using signed subtraction. The call to max() will correctly handle any negative numbers that are produced. Apply the same fix to the other timings, even though those subtractions are less likely to underflow.
A flaw was found in libgepub, a library used to read EPUB files. The software mishandles file size calculations when opening specially crafted EPUB files, leading to incorrect memory allocations. This issue causes the application to crash. Known affected usage includes desktop services like Tumbler, which may process malicious files automatically when browsing directories. While no direct remote attack vectors are confirmed, any application using libgepub to parse user-supplied EPUB content could be vulnerable to a denial of service.
CVE-2025-49180 is an integer overflow vulnerability in the RandR (Resize and Rotate) X11 extension's RRChangeProviderProperty function that fails to properly validate input parameters. This allows a local, unprivileged attacker to trigger memory allocation failures or heap corruption, potentially leading to privilege escalation or denial of service on X11-based systems. The vulnerability requires local access and low privileges to exploit, making it a significant risk for multi-user systems and shared computing environments.
CVE-2025-49179 is an integer overflow vulnerability in the X Record extension's RecordSanityCheckRegisterClients function that allows authenticated local users to bypass request length validation checks. This flaw enables privilege escalation and potential code execution on affected X11 systems. With a CVSS score of 7.3 and requiring local access with low privileges, this poses a moderate-to-high risk for multi-user systems; exploitation status and POC availability have not been confirmed in public disclosures as of analysis time.
CVE-2025-49176 is an integer overflow vulnerability in the X11 Big Requests extension that allows local attackers with low privileges to bypass request size validation by triggering a multiplication-based integer wrap-around, enabling denial of service or potential code execution through oversized X protocol requests. The vulnerability affects X11 server implementations that use the Big Requests extension; while not currently listed in CISA KEV catalog, the 7.3 CVSS score and local attack vector indicate moderate-to-high real-world risk for multi-user systems. No public POC or active exploitation has been confirmed at time of analysis.
A flaw was found in how GLib’s GString manages memory when adding data to strings. If a string is already very large, combining it with more input can cause a hidden overflow in the size calculation. This makes the system think it has enough memory when it doesn’t. As a result, data may be written past the end of the allocated memory, leading to crashes or memory corruption.
A flaw was found in GIMP. An integer overflow vulnerability exists in the GIMP "Despeckle" plug-in. The issue occurs due to unchecked multiplication of image dimensions, such as width, height, and bytes-per-pixel (img_bpp), which can result in allocating insufficient memory and subsequently performing out-of-bounds writes. This issue could lead to heap corruption, a potential denial of service (DoS), or arbitrary code execution in certain scenarios.
Stack-based buffer overflow in libxml2's xmlBuildQName function allows remote unauthenticated attackers to crash affected systems via crafted XML input. The vulnerability affects libxml2 directly and downstream Red Hat products including OpenShift Container Platform 4.12-4.19, RHEL 7-10, and JBoss Core Services. With CVSS 7.5 (AV:N/AC:L/PR:N/UI:N), EPSS 0.75% (73rd percentile), and publicly available exploit code, this represents a moderate real-world risk focused on availability disruption rather than code execution or data compromise.
Perl CryptX before version 0.087 contains an embedded version of the libtommath library vulnerable to integer overflow (CVE-2023-36328), enabling remote code execution with no authentication required. This affects all users of vulnerable CryptX versions; attackers can exploit the integer overflow to achieve complete system compromise including confidentiality, integrity, and availability breaches. The vulnerability carries a critical CVSS 9.8 score with network-accessible attack vector and no user interaction requirements.
An integer overflow vulnerability exists in the OrderedHashTable component of Firefox's JavaScript engine, allowing remote attackers to achieve arbitrary code execution without requiring user interaction or elevated privileges. This critical flaw affects Firefox versions prior to 139.0.4 and carries a maximum CVSS score of 9.8, indicating severe real-world risk with network-based attack vectors requiring no user interaction.
CVE-2025-30327 is an integer overflow vulnerability in Adobe InCopy that enables arbitrary code execution with the privileges of the current user. Versions 20.2, 19.5.3 and earlier are affected; exploitation requires a user to open a malicious file, making it a file-based attack vector with moderate attack complexity. The vulnerability has a CVSS score of 7.8 (high severity) with complete impact on confidentiality, integrity, and availability, though real-world exploitation depends on user interaction and file delivery success.
CVE-2025-32718 is an integer overflow vulnerability in Windows SMB that allows a locally authenticated attacker to achieve privilege escalation with high impact to confidentiality, integrity, and availability. The vulnerability affects Windows operating systems' SMB implementation and has a CVSS score of 7.8 (High) with low attack complexity, making it a significant local privilege escalation risk for multi-user systems and domain environments.
A vulnerability has been identified in the libarchive library. This flaw involves an integer overflow that can be triggered when processing a Web Archive (WARC) file that claims to have more than INT64_MAX - 4 content bytes. An attacker could craft a malicious WARC archive to induce this overflow, potentially leading to unpredictable program behavior, memory corruption, or a denial-of-service condition within applications that process such archives using libarchive. This bug affects libarchive versions prior to 3.8.0.
CVE-2025-5914 is an integer overflow vulnerability in libarchive's archive_read_format_rar_seek_data() function that leads to a double-free memory corruption condition. This affects all users of libarchive who process untrusted RAR archive files, potentially allowing arbitrary code execution or denial-of-service with user interaction (opening a malicious RAR file). While no KEV listing or confirmed public exploits are currently documented, the high CVSS score (7.8) and memory safety nature of the vulnerability indicate significant real-world risk if weaponized.
A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.
CVE-2024-52035 is an integer overflow vulnerability in catdoc 0.95's OLE Document File Allocation Table (FAT) parser that enables heap-based memory corruption when processing malformed files. The vulnerability affects users of catdoc 0.95 who process untrusted OLE documents (Microsoft Office legacy formats), allowing local attackers to corrupt heap memory and potentially achieve code execution. No active KEV status or widespread exploitation has been reported; however, the high CVSS score (8.4) and local attack vector indicate moderate real-world risk for environments processing user-supplied documents.
A low privileged attacker can set the date of the devices to the 19th of January 2038 an therefore exceed the 32-Bit time limit. This causes the date of the switch to be set back to January 1st, 1970.
setDeferredReply in networking.c in Valkey through 8.1.1 has an integer underflow for prev->size - prev->used.
A integer overflow or wraparound in Fortinet FortiOS versions 7.2.0 through 7.2.7, versions 7.0.0 through 7.0.14 may allow a remote unauthenticated attacker to crash the csfd daemon via a specially. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
jq is a command-line JSON processor. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
In the Linux kernel, the following vulnerability has been resolved: crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() Herbert notes that DIV_ROUND_UP() may overflow unnecessarily if. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
A flaw was found in the cookie parsing logic of the libsoup HTTP library, used in GNOME applications and other software.
A flaw was found in the soup_multipart_new_from_message() function of the libsoup HTTP library, which is commonly used by GNOME and other applications to handle web communications. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In libavif before 1.3.0, avifImageRGBToYUV in reformat.c has integer overflows in multiplications involving rgbRowBytes, yRowBytes, uRowBytes, and vRowBytes. Rated medium severity (CVSS 4.5), this vulnerability is no authentication required. Public exploit code available.
In libavif before 1.3.0, makeRoom in stream.c has an integer overflow and resultant buffer overflow in stream->offset+size. Rated medium severity (CVSS 4.5), this vulnerability is no authentication required.
Integer underflow in some Zoom Workplace Apps may allow an authenticated user to conduct a denial of service via network access. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Animate versions 24.0.8, 23.0.11 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could result in arbitrary code execution in the context of the current user. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Animate versions 24.0.8, 23.0.11 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Bridge versions 15.0.3, 14.1.6 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could result in arbitrary code execution in the context of the current user. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.