net: strparser: fix skb_head leak in strp_abort_strp()

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Summary

CVECVE-2026-46102
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:32 UTC
Updated2026-05-27 14:48:03 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: net: strparser: fix skb_head leak in strp_abort_strp() When the stream parser is aborted, for example after a message assembly timeout, it can still hold a reference to a partially assembled message in strp->skb_head. That skb is not released in strp_abort_strp(), which leaks the partially assembled message and can be triggered repeatedly to exhaust memory. Fix this by freeing strp->skb_head and resetting the parser state in the abort path. Leave strp_stop() unchanged so final cleanup still happens in strp_done() after the work and timer have been synchronized.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a e9ae00490d474757c0f9c65073de83e6bb1e5a00 git Not specified
CNA Linux Linux affected 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a 5327dad2ffe9c1b49881dd6d51ff3c6893847568 git Not specified
CNA Linux Linux affected 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a 19ca9475f18f991735f98a22e735c43e95e6298d git Not specified
CNA Linux Linux affected 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a 56082f442023db9be1a5a29d4ee361de4017c0b7 git Not specified
CNA Linux Linux affected 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a fe72340daaf1af588be88056faf98965f39e6032 git Not specified
CNA Linux Linux affected 4.9 Not specified
CNA Linux Linux unaffected 4.9 semver Not specified
CNA Linux Linux unaffected 6.6.140 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.86 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.27 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.4 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/56082f442023db9be1a5a29d4ee361de4017c0b7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5327dad2ffe9c1b49881dd6d51ff3c6893847568 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/19ca9475f18f991735f98a22e735c43e95e6298d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fe72340daaf1af588be88056faf98965f39e6032 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e9ae00490d474757c0f9c65073de83e6bb1e5a00 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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