PT-2026-116703

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf tables: skip expired catchall elements on insert and delete nft setelem catchall insert looks up duplicates with nft set elem active only, while nft set catchall lookup and the dump path additionally skip expired...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: Unconditionally increments set-nelems before inserting an element. In the event that the set is full, a new element is inserted and then removed without waiting for the RCU grace period. Meanwhile, the RCU...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: fixed a percpu memory leak in nftablesaddchain. It seems that the percpu memory issue related to chain statistics began to occur after the commit 3bc158f8d0330f0a “netfilter: nftables: mapping basechain...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: initialize registers in nftdochain The registers were initialized to prevent a stack leak into the user space...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: Do not ignore the genmask when looking up a chain by its ID. When adding a rule to a chain whose ID is referenced, if that chain has been deleted in the same batch, the rule might end up referencing a deleted...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables – Release flowtable after the rcu grace period with an error. The function synchronizercu is called after unregistering the hooks from the error path. This is because a hook that already references this...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: Fixed an issue where the nftcountersenabled counter might underflow during the execution of nftablesaddchain. The syzbot reports that the nftcountersenabled counter underflows at nftablesaddchain1. The issue...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: Anonymous sets are never used with a timeout flag; therefore, this behavior is disallowed. An exception to this rule applies for NFTSETEVAL, to ensure that legacy metering mechanisms continue to work properly...

Astra Linux – Vulnerability in Linux, Linux 5.10

The file net/netfilter/nfdupnetdev.c in the Linux kernel versions 5.4 through 5.6.10 allows local users to gain privileges due to a heap-out-of-bounds write. This issue is related to the nftablesoffload mechanism...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables – Do not compare internal table flags during updates. If a table update does not modify the flags, skip the transaction...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nftables: Honor the “dormant flag” from the netdev release event path. Check for the “dormant flag” of the table otherwise the netdev release event path attempts to unregister an already unregistered hook...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nftables: Unregistering flowtable hooks upon netns exit. Unregistering flowtable hooks before they are released via nftablesflowtabledestroy; otherwise, the hook code may report a Use-After-Free error. BUG: KASAN:...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables – Failure to set the dormant flag on the hook register We need to set the dormant flag again if we fail to register the hooks. During memory pressure, hook registration may fail, resulting in a table being...

Astra Linux – Vulnerability in Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: The commit mutex should not be released during the critical section between nftgcseqBegin and nftgcseqEnd. Otherwise, the async GC worker could collect expired objects and obtain the released commit lock with...

PT-2026-94409

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the netfilter nf tables component where both the dynset and newsetelem paths perform a double clone of existing set expressions when setting set element expressions...

PT-2026-94410

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the netfilter nf tables component where the hardware offload step occurs before the chain blob is built. This sequence can lead to an inconsistent state where the...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nftables: Unconditionally flushes pending work before the notifier syzbot reports: KASAN: Slab-uaf in nftctxupdate, include/net/netfilter/nftables.h: 1831 KASAN: Slab-uaf in nftcommitrelease,...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: Rejected duplicate devices during updates. It is possible for a chain/flowtable update to include duplicate devices within the same batch. Unfortunately, the netdev event path only removes the first device...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

A use-after-free vulnerability in the netfilter component of the Linux kernel’s nftables module can be exploited to achieve local privilege escalation. A flaw in the error handling of bound chains causes a use-after-free in the abort path of NFTMSGNEWRULE. This vulnerability requires that...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: A memory leak occurred in flow rule handling during the commit path. The abort path released the flow rule object, but the commit path did not. The code has been updated to destroy these objects before...