kernel: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931()

A flaw was found in the Linux kernel's netfilter subsystem, specifically within the nfconntrackh323 module. This vulnerability occurs in the DecodeQ931 function when processing a zero-length value from a packet. An integer underflow during a length calculation results in a large, incorrect value...

kernel: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931()

A flaw was found in the Linux kernel's netfilter subsystem, specifically within the nfconntrackh323 module. This vulnerability occurs in the DecodeQ931 function when processing a zero-length value from a packet. An integer underflow during a length calculation results in a large, incorrect value...

ALSA-2026:21557 Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: can: j1939: j1939sessionnew: fix skb reference counting CVE-2024-56645 kernel: ima: don't clear IMADIGSIG flag when setting or removing non-IMA xattr CVE-2025-68183 kernel: mm: thp: deny...

UBUNTU-CVE-2026-45859

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkqueue: do shared-unconfirmed check before segmentation Ulrich reports a regression with nfqueue: If an application did not set the 'FGSO' capability flag and a gso packet with an unconfirmed nfconn entry is...

PT-2026-43726

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A regression in the netfilter nfnetlink queue component causes UDP packets to be dropped instead of queued. This occurs when an application has not set the F GSO capability flag and a...

PT-2026-61230

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An unintended behavior in the TCP conntrack state machine allows a connection to be forced into the CLOSE state via an RST packet with an invalid sequence number. After a SYN packet is...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: The label should be released when replacing an existing ct entry. The cited “commit” does not release the label mapping when replacing an existing ct entry, leading to the following memory leak report: Unreferenced...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: CT: Fix cleanup of CT before cleanup of TC ct rules CT cleanup assumes that all tc rules were deleted first. Therefore, it is possible to delete the CT shared resources e.g., draction and fwdaction, which are shared...

SUSE CVE-2026-43450

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkcthelper: fix OOB read in nfnlcthelperdumptable nfnlcthelperdumptable has a 'goto restart' that jumps to a label inside the for loop body. When the "last" helper saved in cb-args1 is deleted between dump round...

CVE-2026-43450

A flaw was found in the Linux kernel's nfnetlinkcthelper component. This vulnerability, an out-of-bounds read, occurs in the nfnlcthelperdumptable function when a network connection tracking helper is removed during a dump operation, leading to a bypassed bounds check. A local attacker could...

UBUNTU-CVE-2026-43450

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkcthelper: fix OOB read in nfnlcthelperdumptable nfnlcthelperdumptable has a 'goto restart' that jumps to a label inside the for loop body. When the "last" helper saved in cb-args1 is deleted between dump round...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconncount: Fixed the issue where the “ct” field was leaked during error paths. There are some situations where “ct” might be leaked because error paths skip the refcounted check and return immediately. To address thi...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from accessing exp-master in ctnetlink without properly securing the master connection tracking object,...

CVE-2026-43060

The CVE-2026-43060 issue affects the Linux kernel netfilter component (nft_ct). When the nft_ct module is removed, packets enqueued in nfqueue may retain stale references to conntrack zone templates or timeout policies, risking instability or DoS. The root cause is references that can outlive the...

CVE-2026-43027

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrackhelper: pass helper to expect cleanup nfconntrackhelperunregister calls nfctexpectiteratedestroy to remove expectations belonging to the helper being unregistered. However, it passes NULL instead of the help...

netfilter: nft_ct: fix use-after-free in timeout object destroy

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CVE-2026-31665

A flaw was found in the Linux kernel's netfilter connection tracking nfconntrack component. This vulnerability is a use-after-free error, occurring when a timeout object is deallocated prematurely without waiting for an RCU Read-Copy-Update grace period. This allows concurrent packet processing t...

DEBIAN-CVE-2026-31665

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftct: fix use-after-free in timeout object destroy nftcttimeoutobjdestroy frees the timeout object with kfree immediately after nfctuntimeout, without waiting for an RCU grace period. Concurrent packet processing on...

CVE-2026-31665 netfilter: nft_ct: fix use-after-free in timeout object destroy

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftct: fix use-after-free in timeout object destroy nftcttimeoutobjdestroy frees the timeout object with kfree immediately after nfctuntimeout, without waiting for an RCU grace period. Concurrent packet processing on...

CVE-2026-31496 netfilter: nf_conntrack_expect: skip expectations in other netns via proc

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrackexpect: skip expectations in other netns via proc Skip expectations that do not reside in this netns. Similar to e77e6ff502ea "netfilter: conntrack: do not dump other netns's conntrack entries via proc"...