Linux Distros Unpatched Vulnerability : CVE-2026-53239

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - xfrm: policy: fix use-after-free on inexact bin in xfrmpolicybyselctx Fix the race by pruning the bin while still holding xfrmpolicylock, before dropping it. Us...

xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx()

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CVE-2026-53239

In the Linux kernel, the following vulnerability has been resolved: xfrm: policy: fix use-after-free on inexact bin in xfrmpolicybyselctx Fix the race by pruning the bin while still holding xfrmpolicylock, before dropping it. Use xfrmpolicyinexactprunebin directly since the lock is already held...

UBUNTU-CVE-2026-53239

In the Linux kernel, the following vulnerability has been resolved: xfrm: policy: fix use-after-free on inexact bin in xfrmpolicybyselctx Fix the race by pruning the bin while still holding xfrmpolicylock, before dropping it. Use xfrmpolicyinexactprunebin directly since the lock is already held...

CVE-2026-53239

In the Linux kernel, the following vulnerability has been resolved: xfrm: policy: fix use-after-free on inexact bin in xfrmpolicybyselctx Fix the race by pruning the bin while still holding xfrmpolicylock, before dropping it. Use xfrmpolicyinexactprunebin directly since the lock is already held...

EUVD-2026-39330

In the Linux kernel, the following vulnerability has been resolved: xfrm: policy: fix use-after-free on inexact bin in xfrmpolicybyselctx Fix the race by pruning the bin while still holding xfrmpolicylock, before dropping it. Use xfrmpolicyinexactprunebin directly since the lock is already held...

CVE-2026-53239

The CVE-2026-53239 issue is a Linux kernel use-after-free in the xfrm policy path, specifically in xfrm_policy_bysel_ctx(). A race between CPU0 deleting a policy and CPU1 rebuilding inexact policy bins can lead to UAF of the inexact bin, causing potential system instability or DoS. The fix prunes...

CVE-2026-53239

In the Linux kernel, the following vulnerability has been resolved: xfrm: policy: fix use-after-free on inexact bin in xfrmpolicybyselctx Fix the race by pruning the bin while still holding xfrmpolicylock, before dropping it. Use xfrmpolicyinexactprunebin directly since the lock is already held...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: xfrm: fixed the race condition in ipRtbug for icmpRouteLookup reverse path icmpRouteLookup performs multiple route lookups to find a suitable route for sending ICMP error messages, with special handling for XFRM IPsec policies. T...

OPENSUSE-SU-2026:20912-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 16.0 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2023-20585: iommu/amd: Use maximum Event log buffer size when SNP is enabled on Family 0x19 bsc1243603. - CVE-2026-3150: bcache: fix cacheddev.sbbio use-after-free and...

EUVD-2026-32371

In the Linux kernel, the following vulnerability has been resolved: xfrm: fix iprtbug race in icmproutelookup reverse path icmproutelookup performs multiple route lookups to find a suitable route for sending ICMP error messages, with special handling for XFRM IPsec policies. The lookup sequence i...

UBUNTU-CVE-2026-45905

In the Linux kernel, the following vulnerability has been resolved: xfrm: fix iprtbug race in icmproutelookup reverse path icmproutelookup performs multiple route lookups to find a suitable route for sending ICMP error messages, with special handling for XFRM IPsec policies. The lookup sequence i...

PT-2026-43772

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the icmp route lookup function during the reverse path process for sending ICMP error messages with XFRM IPsec policies. When the system acts as a forwarding...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: xfrm: The issue occurs in the error path of the xfrmpolicycheck function. When the fetching process of the object pols1 fails, the function simply returns 0, without decrementing the reference count of pols0. This happens either...

Astra Linux – Vulnerability in Linux 5.10, Linux

A issue was discovered in the Linux kernel through version 5.18.14. The xfrmexpandpolicies function in net/xfrm/xfrmpolicy.c can cause the refcount to be dropped twice...

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DirtyFrag Detection Lab A self-contained detection engineerin...

SUSE CVE-2026-43091

In the Linux kernel, the following vulnerability has been resolved: xfrm: Wait for RCU readers during policy netns exit xfrmpolicyfini frees the policybydst hash tables after flushing the policy work items and deleting all policies, but it does not wait for concurrent RCU readers to leave their...

EUVD-2026-27590

In the Linux kernel, the following vulnerability has been resolved: xfrm: fix refcount leak in xfrmmigratepolicyfind syzkaller reported a memory leak in xfrmpolicyalloc: BUG: memory leak unreferenced object 0xffff888114d79000 size 1024: comm "syz.1.17", pid 931 ... xfrmpolicyalloc+0xb3/0x4b0...

CVE-2026-43090

In the Linux kernel, the following vulnerability has been resolved: xfrm: fix refcount leak in xfrmmigratepolicyfind syzkaller reported a memory leak in xfrmpolicyalloc: BUG: memory leak unreferenced object 0xffff888114d79000 size 1024: comm "syz.1.17", pid 931 ... xfrmpolicyalloc+0xb3/0x4b0...

CVE-2026-43091

In the Linux kernel, the following vulnerability has been resolved: xfrm: Wait for RCU readers during policy netns exit xfrmpolicyfini frees the policybydst hash tables after flushing the policy work items and deleting all policies, but it does not wait for concurrent RCU readers to leave their...