netfilter: nfnetlink_queue: hold nfnl mutex in event notifier

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98624
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-18 16:17:15 UTC
Updated2026-10-19 10:19:26 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_queue: hold nfnl mutex in event notifier We must serialize the release notifier and the config netlink function. A concurrent thread can issue close() which can call the release function while unrelated socket processes UNBIND request for same portid: Oops: general protection fault, [..] RIP: 0010:__instance_destroy+0x60/0x210 [nfnetlink_queue] Call Trace: nfqnl_recv_config+0x9b0/0xdc0 [nfnetlink_queue] nfnetlink_rcv_msg+0x7c2/0xeb0 ? __pfx_nfnetlink_rcv_msg+0x10/0x10 After this, parallel UNBIND and URELEASE events are impossible. This change isn't nice, but its the shortest fix given instances are not refcounted and the nfnetlink config callback drops the rcu read lock early due to need for sleeping allocations.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb 46432f2e76f7c385d82506304a2928e7d293289f git Not specified
CNA Linux Linux affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb 597320337c3da06c92a9e95cfc755da66fedc476 git Not specified
CNA Linux Linux affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb 2e9be1302f25c9be51c2fb8c907bc6d8a1050e33 git Not specified
CNA Linux Linux affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb d559e06a5ab7c064100aafd5c826eadd0f1c6216 git Not specified
CNA Linux Linux affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb 1d1184411599a7c2217560bab3bbe641c6d03b95 git Not specified
CNA Linux Linux affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb 07a3ec8fdc5a1267c00cd6fd1cf8bbb5cda913c1 git Not specified
CNA Linux Linux affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb 8137a39e08e838ced234044384740ceeb99ed388 git Not specified
CNA Linux Linux affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb 9461613afc59acef44a0071b0dd5075f6e993ffe git Not specified
CNA Linux Linux affected 2.6.14 Not specified
CNA Linux Linux unaffected 2.6.14 semver Not specified
CNA Linux Linux unaffected 5.10.271 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.222 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.189 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.158 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.112 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.55 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.9 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/2e9be1302f25c9be51c2fb8c907bc6d8a1050e33 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1d1184411599a7c2217560bab3bbe641c6d03b95 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9461613afc59acef44a0071b0dd5075f6e993ffe 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8137a39e08e838ced234044384740ceeb99ed388 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d559e06a5ab7c064100aafd5c826eadd0f1c6216 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/597320337c3da06c92a9e95cfc755da66fedc476 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/07a3ec8fdc5a1267c00cd6fd1cf8bbb5cda913c1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/46432f2e76f7c385d82506304a2928e7d293289f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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