tracing/user_events: Don't destroy fields when event removal fails

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-97924
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:19 UTC
Updated2026-10-19 10:17:43 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: tracing/user_events: Don't destroy fields when event removal fails destroy_user_event() destroys the event's fields before attempting to remove the trace event call. If user_event_set_call_visible() fails, e.g. because the event is still enabled and trace_remove_event_call() returns -EBUSY, the event is left registered with an irreversibly destroyed field list. Any subsequent interaction with the event then operates on an empty field list while it is still fully visible in tracefs. Move the field destruction after the call removal, and splice the field list back onto the event when the removal fails so the event remains in a consistent state.

Risk And Classification

EPSS: 0.002000000 probability, percentile 0.089050000 (date 2026-10-05)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 7f5a08c79df35e68f1a43033450c5050f12bc155 a3d9b8b7c8f3627976fe758c77ffd3da260824d7 git Not specified
CNA Linux Linux affected 7f5a08c79df35e68f1a43033450c5050f12bc155 9c62b7e92b6086a2a0aeb71f3553dd8cf7fdcd8b git Not specified
CNA Linux Linux affected 7f5a08c79df35e68f1a43033450c5050f12bc155 0892da2272ec565858aa1ec5458552d699de9142 git Not specified
CNA Linux Linux affected 7f5a08c79df35e68f1a43033450c5050f12bc155 62d6544e86506bb0695c9594c713cba859666f2f git Not specified
CNA Linux Linux affected 7f5a08c79df35e68f1a43033450c5050f12bc155 2deb753127d7b7035e893955c5e91875e767d1f8 git Not specified
CNA Linux Linux affected 5.18 Not specified
CNA Linux Linux unaffected 5.18 semver Not specified
CNA Linux Linux unaffected 6.6.158 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.111 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/62d6544e86506bb0695c9594c713cba859666f2f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2deb753127d7b7035e893955c5e91875e767d1f8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9c62b7e92b6086a2a0aeb71f3553dd8cf7fdcd8b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a3d9b8b7c8f3627976fe758c77ffd3da260824d7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0892da2272ec565858aa1ec5458552d699de9142 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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