netfilter: nfnetlink_log: cope with concurrent instance destruction

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-97998
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:28 UTC
Updated2026-09-25 11:17:28 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: cope with concurrent instance destruction Instances are refcounted. However, only memory release happens on the 1 -> 0 transition; the unlink from hashes can occur with any refcount. Uncooperative userspace can force a situation where a queue is pending for destruction from netlink event while a different socket with same portid processes an UNBIND request. With right timing, this will unhash the instance again: Oops: general protection fault, [..] Call Trace: <TASK> nfulnl_recv_config+0x31a/0xd50 nfnetlink_rcv_msg+0x7c2/0xeb0

Risk And Classification

EPSS: 0.002000000 probability, percentile 0.088130000 (date 2026-09-27)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 0597f2680d666a3bcf101ac0c771ba7e50016bbd 0234d7ca0317be0a623300e1693cd794bbfdf8af git Not specified
CNA Linux Linux affected 0597f2680d666a3bcf101ac0c771ba7e50016bbd 1a7a8ac9a9f0ad0d410c901cb6f233833518844c git Not specified
CNA Linux Linux affected 0597f2680d666a3bcf101ac0c771ba7e50016bbd e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb git Not specified
CNA Linux Linux affected 0597f2680d666a3bcf101ac0c771ba7e50016bbd 387d744fa7e499d2c3748a4e60e02ebb24e7fb16 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 6.12.111 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/1a7a8ac9a9f0ad0d410c901cb6f233833518844c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/387d744fa7e499d2c3748a4e60e02ebb24e7fb16 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0234d7ca0317be0a623300e1693cd794bbfdf8af 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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