net/sched: act_api: release tail references on DELACTION failure

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98235
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 09:18:11 UTC
Updated2026-10-19 10:18:24 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: net/sched: act_api: release tail references on DELACTION failure A batched RTM_DELACTION request takes a temporary reference on each action before attempting any deletion. tcf_action_delete() clears each processed slot and drops its temporary reference before attempting the deletion. If deletion fails, tca_action_gd() calls tcf_action_put_many() to release the remaining references, but its tcf_act_for_each_action() iterator stops at the first NULL slot. When a batch stops at an action bound to a filter, this leaks a reference on each subsequent action. A later delete of an unbound action can then return success without removing it from the IDR. Walk the full array in tcf_action_put_many() and skip NULL slots to release the references held on the unprocessed actions.

Risk And Classification

EPSS: 0.001750000 probability, percentile 0.063840000 (date 2026-10-06)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a0e947c9ccffe47d45aca793d9e7fe4f4494e381 9eaba16f1b6ee19b249e6afd82c27f958d441458 git Not specified
CNA Linux Linux affected a0e947c9ccffe47d45aca793d9e7fe4f4494e381 1be63e4579af408d596f0f3165faf1a880631d3b git Not specified
CNA Linux Linux affected a0e947c9ccffe47d45aca793d9e7fe4f4494e381 57b477e46ef2df3483f3488cc713c61c4b384aab git Not specified
CNA Linux Linux affected a0e947c9ccffe47d45aca793d9e7fe4f4494e381 6e05e46fa821a5c1b281355f1f622ac76cb6080a git Not specified
CNA Linux Linux affected 6.8 Not specified
CNA Linux Linux unaffected 6.8 semver Not specified
CNA Linux Linux unaffected 6.12.112 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.54 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.8 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/57b477e46ef2df3483f3488cc713c61c4b384aab 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6e05e46fa821a5c1b281355f1f622ac76cb6080a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9eaba16f1b6ee19b249e6afd82c27f958d441458 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1be63e4579af408d596f0f3165faf1a880631d3b 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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