net: openvswitch: fix skb leak on flow key update failure during ct

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Summary

CVECVE-2026-74464
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 13:17:51 UTC
Updated2026-08-15 13:17:51 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix skb leak on flow key update failure during ct ovs_ct_execute() always steals or frees the skb on failure while ovs_flow_key_update() does not. So, if it fails and we return right away, the skb ends up leaked. Fix that by breaking instead and letting the common error handling code at the bottom of the loop to free the skb properly. This is a very unlikely scenario as it requires the packet to become unparseable by applying a set of actions on a previously parseable skb, but should be fixed nevertheless. Reported by Sashiko.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected ec0d043d05e6e3c0c2fac5de922c800c027c6386 736e972f3f8a304158345223ac6e816166a467ce git Not specified
CNA Linux Linux affected ec0d043d05e6e3c0c2fac5de922c800c027c6386 e84dfaac50aab45ad8c670da43e3aa1f97bd2a41 git Not specified
CNA Linux Linux affected ec0d043d05e6e3c0c2fac5de922c800c027c6386 e0ba8eaef2a0d02a7a485e6a7157e47272b65cea git Not specified
CNA Linux Linux affected ec0d043d05e6e3c0c2fac5de922c800c027c6386 393f3c72600ab6721d732a0ab245bc896c5b28fc git Not specified
CNA Linux Linux affected ec0d043d05e6e3c0c2fac5de922c800c027c6386 bc62e843bc48f933da765ce47079fd992e535794 git Not specified
CNA Linux Linux affected 4.3 Not specified
CNA Linux Linux unaffected 4.3 semver Not specified
CNA Linux Linux unaffected 6.6.151 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.103 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.44 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.8 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc6 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/bc62e843bc48f933da765ce47079fd992e535794 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e0ba8eaef2a0d02a7a485e6a7157e47272b65cea 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/736e972f3f8a304158345223ac6e816166a467ce 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e84dfaac50aab45ad8c670da43e3aa1f97bd2a41 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/393f3c72600ab6721d732a0ab245bc896c5b28fc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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