Is there a patch available for CVE-2025-40290?

Yes, a patch is available for CVE-2025-40290. Update the affected software to the latest version immediately.

Linux Kernel CVE-2025-40290

EUVD-2025-201616

2025-12-08 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Debian Linux Denial Of Service Linux Kernel

Lifecycle Timeline

Patch released

Mar 16, 2026 - 15:00 nvd

Patch available

EUVD ID Assigned

Mar 15, 2026 - 17:54 euvd

EUVD-2025-201616

Analysis Generated

Mar 15, 2026 - 17:54 vuln.today

CVE Published

Dec 08, 2025 - 01:16 nvd

N/A

DescriptionCVE.org

In the Linux kernel, the following vulnerability has been resolved:

xsk: avoid data corruption on cq descriptor number

Since commit 30f241fcf52a ("xsk: Fix immature cq descriptor production"), the descriptor number is stored in skb control block and xsk_cq_submit_addr_locked() relies on it to put the umem addrs onto pool's completion queue.

skb control block shouldn't be used for this purpose as after transmit xsk doesn't have control over it and other subsystems could use it. This leads to the following kernel panic due to a NULL pointer dereference.

BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP NOPTI CPU: 2 UID: 1 PID: 927 Comm: p4xsk.bin Not tainted 6.16.12+deb14-cloud-amd64 #1 PREEMPT(lazy) Debian 6.16.12-1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014 RIP: 0010:xsk_destruct_skb+0xd0/0x180 [...] Call Trace: <IRQ> ? napi_complete_done+0x7a/0x1a0 ip_rcv_core+0x1bb/0x340 ip_rcv+0x30/0x1f0 __netif_receive_skb_one_core+0x85/0xa0 process_backlog+0x87/0x130 __napi_poll+0x28/0x180 net_rx_action+0x339/0x420 handle_softirqs+0xdc/0x320 ? handle_edge_irq+0x90/0x1e0 do_softirq.part.0+0x3b/0x60 </IRQ> <TASK> __local_bh_enable_ip+0x60/0x70 __dev_direct_xmit+0x14e/0x1f0 __xsk_generic_xmit+0x482/0xb70 ? __remove_hrtimer+0x41/0xa0 ? __xsk_generic_xmit+0x51/0xb70 ? _raw_spin_unlock_irqrestore+0xe/0x40 xsk_sendmsg+0xda/0x1c0 __sys_sendto+0x1ee/0x200 __x64_sys_sendto+0x24/0x30 do_syscall_64+0x84/0x2f0 ? __pfx_pollwake+0x10/0x10 ? __rseq_handle_notify_resume+0xad/0x4c0 ? restore_fpregs_from_fpstate+0x3c/0x90 ? switch_fpu_return+0x5b/0xe0 ? do_syscall_64+0x204/0x2f0 ? do_syscall_64+0x204/0x2f0 ? do_syscall_64+0x204/0x2f0 entry_SYSCALL_64_after_hwframe+0x76/0x7e </TASK> [...] Kernel panic - not syncing: Fatal exception in interrupt Kernel Offset: 0x1c000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)

Instead use the skb destructor_arg pointer along with pointer tagging. As pointers are always aligned to 8B, use the bottom bit to indicate whether this a single address or an allocated struct containing several addresses.

Analysis

In the Linux kernel, the following vulnerability has been resolved:

xsk: avoid data corruption on cq descriptor number

Technical ContextAI

A NULL pointer dereference occurs when the application attempts to use a pointer that has not been initialized or has been set to NULL.

RemediationAI

Add NULL checks before pointer dereference operations. Use static analysis to identify potential NULL pointer issues. Enable compiler warnings.

More in Linux Kernel

View all

CVE-2022-0847 HIGH Act Now POC

7.8 Mar 10

Linux kernel contains a flaw known as 'Dirty Pipe' where improper pipe buffer flag initialization allows unprivileged lo

CVE-2015-1328 HIGH Act Now POC

7.8 Nov 28

The overlayfs implementation in the linux (aka Linux kernel) package before 3.19.0-21.21 in Ubuntu through 15.04 does no

CVE-2017-7308 HIGH Act Now POC

7.8 Mar 29

The packet_set_ring function in net/packet/af_packet.c in the Linux kernel through 4.10.6 does not properly validate cer

CVE-2017-16995 HIGH Act Now POC

7.8 Dec 27

The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial

CVE-2017-1000112 HIGH Act Now POC

7.0 Oct 05

Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. Rated high severity (CVSS 7.0). Public ex

CVE-2015-8660 MEDIUM This Month POC

6.7 Dec 28

The ovl_setattr function in fs/overlayfs/inode.c in the Linux kernel through 4.3.3 attempts to merge distinct setattr op

CVE-2012-0056 MEDIUM This Month POC

6.9 Jan 27

The mem_write function in the Linux kernel before 3.2.2, when ASLR is disabled, does not properly check permissions when

CVE-2014-0038 MEDIUM This Month POC

6.9 Feb 06

The compat_sys_recvmmsg function in net/compat.c in the Linux kernel before 3.13.2, when CONFIG_X86_X32 is enabled, allo

CVE-2016-8655 HIGH Act Now POC

7.8 Dec 08

Race condition in net/packet/af_packet.c in the Linux kernel through 4.8.12 allows local users to gain privileges or cau

CVE-2016-0728 HIGH Act Now POC

7.8 Feb 08

The join_session_keyring function in security/keys/process_keys.c in the Linux kernel before 4.4.1 mishandles object ref

CVE-2017-0561 CRITICAL Act Now POC

9.8 Apr 07

A remote code execution vulnerability in the Broadcom Wi-Fi firmware could enable a remote attacker to execute arbitrary

CVE-2022-2588 MEDIUM This Month POC

5.3 Jan 08

It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the h

Same technique Denial Of Service

View all

CVE-2015-5119 CRITICAL POC

9.8

CVE-2011-2462 CRITICAL POC

9.8

CVE-2011-0611 HIGH POC

8.8

CVE-2012-1889 HIGH POC

8.8

CVE-2012-0507 CRITICAL POC

9.8

CVE-2014-1761 HIGH POC

7.8

CVE-2015-5122 CRITICAL POC

9.8

CVE-2011-0609 HIGH POC

7.8

CVE-2025-40290 vulnerability details – vuln.today

Back