ipvs: do not keep dest_dst if dev is going down

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Summary

CVECVE-2026-45917
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:06 UTC
Updated2026-05-27 14:48:03 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ipvs: do not keep dest_dst if dev is going down There is race between the netdev notifier ip_vs_dst_event() and the code that caches dst with dev that is going down. As the FIB can be notified for the closed device after our handler finishes, it is possible valid route to be returned and cached resuling in a leaked dev reference until the dest is not removed. To prevent new dest_dst to be attached to dest just after the handler dropped the old one, add a netif_running() check to make sure the notifier handler is not currently running for device that is closing.

Risk And Classification

EPSS: 0.000180000 probability, percentile 0.048460000 (date 2026-06-01)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 7a4f0761fce32ff4918a7c23b08db564ad33092d 64af43033503458c46023e56d6ae7bb0f824b55f git Not specified
CNA Linux Linux affected 7a4f0761fce32ff4918a7c23b08db564ad33092d bae53b3baf2ff2f45f9205c438818fc055601a54 git Not specified
CNA Linux Linux affected 7a4f0761fce32ff4918a7c23b08db564ad33092d 024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3e git Not specified
CNA Linux Linux affected 7a4f0761fce32ff4918a7c23b08db564ad33092d 8fde939b0206afc1d5846217a01a16b9bc8c7896 git Not specified
CNA Linux Linux affected 2.6.39 Not specified
CNA Linux Linux unaffected 2.6.39 semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.14 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.4 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/bae53b3baf2ff2f45f9205c438818fc055601a54 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/64af43033503458c46023e56d6ae7bb0f824b55f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8fde939b0206afc1d5846217a01a16b9bc8c7896 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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