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 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 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 nftablesaddchain function. The syzbot reports that the nftcountersenabled counter might underflow at nftablesaddchain1. The issue...

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 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 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...

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 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 5.15, 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 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: The netlink notifier might race to release objects. The commit release path is invoked via callrcu, and it runs without locking to release the objects after the rcu grace period. The netlink notifier handler...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

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...

Astra Linux - Vulnerability in Linux, Linux 5.10

A vulnerability was discovered in the Linux kernel in net/netfilter/nftablescore.c:nftdochain, which can cause a use-after-free. This issue requires that the 'return' statement be handled with the proper preconditions, as it can lead to a kernel information leak exploitable by a local, unprivileg...

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

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nftables: Fixed a potential data race in nftexprtypeget. The function nftunregisterexpr can occur concurrently with nftexprtypeget. There is no protection when iterating over the nftablesexpressions list in...

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: flush pending destroy work before exitnet release This issue is similar to 2c9f0293280e “netfilter: nftables: flush pending destroy work before netlink notifier”, aimed at addressing a race condition between...

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 found in Linux 5.15, Linux 6.1, and Linux 5.10

A use-after-free vulnerability in the Linux kernel’s netfilter:nftables component can be exploited to achieve local privilege escalation. Adding or removing rules from chain bindings within the same transaction can lead to use-after-free issues. We recommend upgrading to the version after the...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

A null pointer dereference vulnerability was discovered in the nftdynsetinit function in net/netfilter/nftdynset.c within nftables in the Linux kernel. This issue may allow a local attacker with the CAPNETADMIN user privilege to trigger a denial of service attack...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nftables – There is a possibility of module reference underflow in the error path. When nftexprclone fails, dst-ops is set. However, the module reference count has not been updated yet. As a result, nftexprdestroy...

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...