devlink: Release nested relation on devlink free

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-53261
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-25 09:16:44 UTC
Updated2026-06-30 14:44:27 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: devlink: Release nested relation on devlink free devlink relation state is normally released from devl_unregister(), which calls devlink_rel_put(). This misses devlink instances that get a nested relation before registration and then fail probe before devl_register() is reached. That flow can happen for SFs. The child devlink gets linked to its parent before registration, then a later probe error calls devlink_free() directly. Since the instance was never registered, devl_unregister() is not called and devlink->rel is leaked. Release any pending relation from devlink_free() as well. The registered path is unchanged because devl_unregister() already clears devlink->rel before devlink_free() runs.

Risk And Classification

EPSS: 0.001630000 probability, percentile 0.058540000 (date 2026-07-04)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c137743bce02b18c1537d4681aa515f7b80bf0a8 a9137286884703113b1c9e6403bd6d7d97b14754 git Not specified
CNA Linux Linux affected c137743bce02b18c1537d4681aa515f7b80bf0a8 927f96861f939c0b517d13ed27bf4fabbfc1cfb3 git Not specified
CNA Linux Linux affected c137743bce02b18c1537d4681aa515f7b80bf0a8 11324d52b0c63f4f202b35793c6507a575e9a689 git Not specified
CNA Linux Linux affected c137743bce02b18c1537d4681aa515f7b80bf0a8 3522b21fd7e1863d0734537737bd59f1b90d0190 git Not specified
CNA Linux Linux affected 6.7 Not specified
CNA Linux Linux unaffected 6.7 semver Not specified
CNA Linux Linux unaffected 6.12.94 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.36 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.13 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/3522b21fd7e1863d0734537737bd59f1b90d0190 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a9137286884703113b1c9e6403bd6d7d97b14754 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/927f96861f939c0b517d13ed27bf4fabbfc1cfb3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/11324d52b0c63f4f202b35793c6507a575e9a689 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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