Linux Kernel

The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM exists. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

The Siemens R3964 line discipline driver in drivers/tty/n_r3964.c in the Linux kernel before 5.0.8 has multiple race conditions. Rated high severity (CVSS 7.0).

A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. Rated medium severity (CVSS 4.7).

The Linux kernel through 5.0.7, when CONFIG_IA32_AOUT is enabled and ia32_aout is loaded, allows local users to bypass ASLR on setuid a.out programs (if any exist) because install_exec_creds() is. Rated low severity (CVSS 2.5). Public exploit code available and no vendor patch available.

The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() is called too late in load_elf_binary() in fs/binfmt_elf.c, and thus. Rated medium severity (CVSS 4.7). Public exploit code available.

A heap data infoleak in multiple locations including L2CAP_PARSE_CONF_RSP was found in the Linux kernel before 5.1-rc1. Rated medium severity (CVSS 6.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

A heap address information leak while using L2CAP_GET_CONF_OPT was discovered in the Linux kernel before 5.1-rc1. Rated medium severity (CVSS 6.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

It was found that the net_dma code in tcp_recvmsg() in the 2.6.32 kernel as shipped in RHEL6 is thread-unsafe. Rated medium severity (CVSS 6.1), this vulnerability is low attack complexity.

A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. Rated medium severity (CVSS 5.6). This Incorrect Authorization vulnerability could allow attackers to bypass authorization checks to access restricted resources.

In the Linux Kernel before versions 4.20.8 and 4.19.21 a use-after-free error in the "sctp_sendmsg()" function (net/sctp/socket.c) when handling SCTP_SENDALL flag can be exploited to corrupt memory. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

An issue was discovered in aio_poll() in fs/aio.c in the Linux kernel through 5.0.4. 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.

The SCTP socket buffer used by a userspace application is not accounted by the cgroups subsystem. Rated medium severity (CVSS 6.5), this vulnerability is no authentication required, low attack complexity. This Uncontrolled Resource Consumption vulnerability could allow attackers to cause denial of service by exhausting system resources.

In the Linux kernel through 5.0.2, the function inotify_update_existing_watch() in fs/notify/inotify/inotify_user.c neglects to call fsnotify_put_mark() with IN_MASK_CREATE after. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Memory Leak vulnerability could allow attackers to exhaust available memory leading to denial of service.

The KVM implementation in the Linux kernel through 4.20.5 has an Information Leak. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.

The KVM implementation in the Linux kernel through 4.20.5 has a Use-after-Free. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.

In the Linux kernel before 4.20.12, net/ipv4/netfilter/nf_nat_snmp_basic_main.c in the SNMP NAT module has insufficient ASN.1 length checks (aka an array index error), making out-of-bounds read and. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

In the Linux kernel before 4.20.5, attackers can trigger a drivers/char/ipmi/ipmi_msghandler.c use-after-free and OOPS by arranging for certain simultaneous execution of the code, as demonstrated by. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

A memory leak in the kernel_read_file function in fs/exec.c in the Linux kernel through 4.20.11 allows attackers to cause a denial of service (memory consumption) by triggering vfs_read failures. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

In the Linux kernel through 4.20.11, af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free in sockfs_setattr. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

In the Linux kernel before 4.20.8, kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandles reference counting because of a race condition, leading to a use-after-free. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. Public exploit code available.

kernel/bpf/verifier.c in the Linux kernel before 4.20.6 performs undesirable out-of-bounds speculation on pointer arithmetic in various cases, including cases of different branches with different. Rated medium severity (CVSS 5.6).

A flaw was found in the Linux kernel in the function hid_debug_events_read() in drivers/hid/hid-debug.c file which may enter an infinite loop with certain parameters passed from a userspace. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity.

The mincore() implementation in mm/mincore.c in the Linux kernel through 4.19.13 allowed local attackers to observe page cache access patterns of other processes on the same system, potentially. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.

An issue was discovered in can_can_gw_rcv in net/can/gw.c in the Linux kernel through 4.19.13. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity. Public exploit code available.

An issue was discovered in the Linux kernel before 4.18.11. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.

A flaw was found in the Linux kernel's NFS41+ subsystem. Rated high severity (CVSS 8.0), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

An issue was discovered in the Linux kernel before 4.19.9. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. This Uncontrolled Resource Consumption vulnerability could allow attackers to cause denial of service by exhausting system resources.

The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.

In sk_clone_lock of sock.c, there is a possible memory corruption due to type confusion. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.

An issue was discovered in the Linux kernel before 4.19.3. Rated medium severity (CVSS 4.7). This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.

In the Linux kernel through 4.19.6, a local user could exploit a use-after-free in the ALSA driver by supplying a malicious USB Sound device (with zero interfaces) that is mishandled in. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after the final file truncation (removal). Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.

The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the __netlink_ns_capable() function in the net/netlink/af_netlink.c file. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.

The vcpu_scan_ioapic function in arch/x86/kvm/x86.c in the Linux kernel through 4.19.2 allows local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.

kvm_pv_send_ipi in arch/x86/kvm/lapic.c in the Linux kernel through 4.19.2 allows local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that reach a. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.

In the Linux kernel 4.15.x through 4.19.x before 4.19.2, map_write() in kernel/user_namespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID. Rated high severity (CVSS 7.0). Public exploit code available.

In the hidp_process_report in bluetooth, there is an integer overflow. Rated high severity (CVSS 8.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

An issue was discovered in the Linux kernel through 4.19. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.

In the Linux kernel before 4.17, a local attacker able to set attributes on an xfs filesystem could make this filesystem non-operational until the next mount by triggering an unchecked error. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.

The Linux kernel, as used in Ubuntu 18.04 LTS and Ubuntu 18.10, allows local users to obtain names of files in which they would not normally be able to access via an overlayfs mount inside of a user. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

In the Linux kernel through 4.19, a use-after-free can occur due to a race condition between fanout_add from setsockopt and bind on an AF_PACKET socket. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and no vendor patch available.

drivers/tty/n_tty.c in the Linux kernel before 4.14.11 allows local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity.

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.

A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.

The Linux kernel 4.14.67 mishandles certain interaction among XFRM Netlink messages, IPPROTO_AH packets, and IPPROTO_IP packets, which allows local users to cause a denial of service (memory. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity. No vendor patch available.

arch/arm64/kvm/guest.c in KVM in the Linux kernel before 4.18.12 on the arm64 platform mishandles the KVM_SET_ON_REG ioctl. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity.

An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.

An integer overflow flaw was found in the Linux kernel's create_elf_tables() function. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

A security flaw was found in the chap_server_compute_md5() function in the ISCSI target code in the Linux kernel in a way an authentication request from an ISCSI initiator is processed. Rated high severity (CVSS 7.0), this vulnerability is remotely exploitable, no authentication required.

An issue was discovered in the Linux kernel before 4.8. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Incorrect Authorization vulnerability could allow attackers to bypass authorization checks to access restricted resources.

An issue was discovered in the Linux kernel through 4.18.8. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

A security flaw was found in the ip_frag_reasm() function in net/ipv4/ip_fragment.c in the Linux kernel from 4.19-rc1 to 4.19-rc3 inclusive, which can cause a later system crash in ip_do_fragment(). Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. Public exploit code available.

A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.

A flaw was found in the Linux Kernel where an attacker may be able to have an uncontrolled read to kernel-memory from within a vm guest. Rated high severity (CVSS 7.0). This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

An issue was discovered in the Linux kernel before 4.18.6. Rated medium severity (CVSS 6.1), this vulnerability is low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.

The Linux kernel, versions 3.9+, is vulnerable to a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Uncontrolled Resource Consumption vulnerability could allow attackers to cause denial of service by exhausting system resources.

The irda_setsockopt function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17 allows local users to cause a denial of service (ias_object. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

Memory leak in the irda_bind function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17 allows local users to cause a denial of service (memory. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Uncontrolled Resource Consumption vulnerability could allow attackers to cause denial of service by exhausting system resources.

An issue was discovered in yurex_read in drivers/usb/misc/yurex.c in the Linux kernel before 4.17.7. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Out-of-bounds Write vulnerability could allow attackers to write data beyond allocated buffer boundaries leading to code execution or crashes.

A flaw was found in the crypto subsystem of the Linux kernel before version kernel-4.15-rc4. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

A flaw was found in the Linux kernel present since v4.0-rc1 and through v4.13-rc4. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

It was found that the raw midi kernel driver does not protect against concurrent access which leads to a double realloc (double free) in snd_rawmidi_input_params() and snd_rawmidi_output_status(). Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.

The spectre_v2_select_mitigation function in arch/x86/kernel/cpu/bugs.c in the Linux kernel before 4.18.1 does not always fill RSB upon a context switch, which makes it easier for attackers to. Rated medium severity (CVSS 6.5), this vulnerability is low attack complexity.

An issue was discovered in xenvif_set_hash_mapping in drivers/net/xen-netback/hash.c in the Linux kernel through 4.18.1, as used in Xen through 4.11.x and other products. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

The aoedisk_debugfs_show function in drivers/block/aoe/aoeblk.c in the Linux kernel through 4.16.4rc4 allows local users to obtain sensitive address information by reading "ffree: " lines in a. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

The pcpu_embed_first_chunk function in mm/percpu.c in the Linux kernel through 4.14.14 allows local users to obtain sensitive address information by reading dmesg data from a "pages/cpu" printk call. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

The swiotlb_print_info function in lib/swiotlb.c in the Linux kernel through 4.14.14 allows local users to obtain sensitive address information by reading dmesg data from a "software IO TLB" printk. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.

Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Uncontrolled Resource Consumption vulnerability could allow attackers to cause denial of service by exhausting system resources.

A flaw was found in the Linux kernel's ext4 filesystem. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Out-of-bounds Write vulnerability could allow attackers to write data beyond allocated buffer boundaries leading to code execution or crashes.

drivers/infiniband/core/ucma.c in the Linux kernel through 4.17.11 allows ucma_leave_multicast to access a certain data structure after a cleanup step in ucma_process_join, which allows attackers to. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.

A flaw was found in the Linux kernel's ext4 filesystem. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.

An issue was discovered in the Linux kernel through 4.17.10. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

An issue was discovered in the Linux kernel through 4.17.10. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

An issue was discovered in the Linux kernel through 4.17.10. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

An issue was discovered in the Linux kernel through 4.17.10. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

An issue was discovered in the Linux kernel through 4.17.10. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

An issue was discovered in the Linux kernel through 4.17.10. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

An issue was discovered in the Linux kernel through 4.17.10. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

An issue was discovered in the Linux kernel through 4.17.10. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

An issue was discovered in the Linux kernel through 4.17.10. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

A flaw was found in the Linux kernel's ext4 filesystem. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.

A flaw was found in the Linux kernel's ext4 filesystem. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

A flaw was found in the Linux kernel's ext4 filesystem. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

A flaw was found in Linux kernel in the ext4 filesystem code. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.

A flaw was found in Linux kernel's KVM virtualization subsystem. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.

Linux kernel is vulnerable to a stack-out-of-bounds write in the ext4 filesystem code when mounting and writing to a crafted ext4 image in ext4_update_inline_data(). Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.