Linux Kernel Security Vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from an unverified skb length that could lead to the use of uninitialized memory...

Linux Kernel Security Vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from ath11k not handling SKB correctly when booting in monitor mode, which could lead to a null pointer dereferen...

Linux Kernel Security Vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from improper use of the skb control block, which could lead to null pointer dereferencing...

PT-2025-49433

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel's Bluetooth implementation within the hci cmd complete evt function. Specifically, the code does not validate the length of the socket buffer skb before...

PT-2025-49421

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.16.12+deb14-cloud-amd64 1 Description The Linux kernel contained a flaw in the xsk XDP socket subsystem related to descriptor number handling on completion queues. A commit 30f241fcf52a initially introduced an...

CVE-2025-40282 Bluetooth: 6lowpan: reset link-local header on ipv6 recv path

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: 6lowpan: reset link-local header on ipv6 recv path Bluetooth 6lowpan.c netdev has headerops, so it must set link-local header for RX skb, otherwise things crash, eg. with AFPACKET SOCKRAW Add missing skbresetmacheader...

CVE-2025-40248

In the Linux kernel, the following vulnerability has been resolved: vsock: Ignore signal/timeout on connect if already established During connect, acting on a signal/timeout by disconnecting an already established socket leads to several issues: 1. connect invoking vsocktransportcancelpkt -...

EUVD-2025-201294

The WatchGuard Mobile VPN with SSL Client on Windows allows a locally authenticated non-administrative Windows user to escalate their privileges to NT AUTHORITY/SYSTEM on the Windows machine where the VPN Client is installed.This issue affects the Mobile VPN with SSL Client 12.0 up to and includi...

SUSE CVE-2025-40253

In the Linux kernel, the following vulnerability has been resolved: s390/ctcm: Fix double-kfree The function 'mpcrcvdsweepreqmpcginfo' is called conditionally from function 'ctcmpcunpackskb'. It frees passed mpcginfo. After that a call to function 'kfree' in function 'ctcmpcunpackskb' frees it...

AZL-71396 CVE-2025-40248 affecting package kernel for versions less than 6.6.119.3-1

In the Linux kernel, the following vulnerability has been resolved: vsock: Ignore signal/timeout on connect if already established During connect, acting on a signal/timeout by disconnecting an already established socket leads to several issues: 1. connect invoking vsocktransportcancelpkt -...

CVE-2025-40248

In the Linux kernel, the following vulnerability has been resolved: vsock: Ignore signal/timeout on connect if already established During connect, acting on a signal/timeout by disconnecting an already established socket leads to several issues: 1. connect invoking vsocktransportcancelpkt -...

UBUNTU-CVE-2025-40258

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race condition in mptcpschedulework syzbot reported use-after-free in mptcpschedulework 1 Issue here is that mptcpschedulework schedules a work, then gets a refcount on sk-skrefcnt if the work was scheduled. This...

CVE-2025-40258 mptcp: fix race condition in mptcp_schedule_work()

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race condition in mptcpschedulework syzbot reported use-after-free in mptcpschedulework 1 Issue here is that mptcpschedulework schedules a work, then gets a refcount on sk-skrefcnt if the work was scheduled. This...

CVE-2025-40258 mptcp: fix race condition in mptcp_schedule_work()

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race condition in mptcpschedulework syzbot reported use-after-free in mptcpschedulework 1 Issue here is that mptcpschedulework schedules a work, then gets a refcount on sk-skrefcnt if the work was scheduled. This...

EUVD-2025-201209

In the Linux kernel, the following vulnerability has been resolved: vsock: Ignore signal/timeout on connect if already established During connect, acting on a signal/timeout by disconnecting an already established socket leads to several issues: 1. connect invoking vsocktransportcancelpkt -...

CVE-2025-40240 sctp: avoid NULL dereference when chunk data buffer is missing

In the Linux kernel, the following vulnerability has been resolved: sctp: avoid NULL dereference when chunk data buffer is missing chunk-skb pointer is dereferenced in the if-block where it's supposed to be NULL only. chunk-skb can only be NULL if chunk-headskb is not. Check for fraglist instead...

CVE-2025-40240 sctp: avoid NULL dereference when chunk data buffer is missing

In the Linux kernel, the following vulnerability has been resolved: sctp: avoid NULL dereference when chunk data buffer is missing chunk-skb pointer is dereferenced in the if-block where it's supposed to be NULL only. chunk-skb can only be NULL if chunk-headskb is not. Check for fraglist instead...

CVE-2025-40240

The CVE CVE-2025-40240 is a Linux kernel SCTP vulnerability. The issue was a NULL dereference when processing a chunk data buffer that is missing; chunk->skb could be dereferenced in the if-block intended to handle NULL, unless frag_list is checked and the replacement of chunk->skb occurs j...

CVE-2025-40231 vsock: fix lock inversion in vsock_assign_transport()

In the Linux kernel, the following vulnerability has been resolved: vsock: fix lock inversion in vsockassigntransport Syzbot reported a potential lock inversion deadlock between vsockregistermutex and sklock-AFVSOCK when vsocklinger is called. The issue was introduced by commit 687aa0c5581b "vsoc...

kernel: udp: Fix memory accounting leak.

A memory overflow vulnerability exists within the Linux kernel's networking subsystem. Specifically, an application can set the SORCVBUF socket option to its maximum value INTMAX, which triggers an integer overflow within the udprmemrelease function during socket closure. The udpdestructcommon...