mm/damon/stat: fix memory leak on damon_start() failure in damon_stat_start()

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Summary

CVECVE-2026-46087
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:30 UTC
Updated2026-05-27 14:48:03 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: mm/damon/stat: fix memory leak on damon_start() failure in damon_stat_start() Destroy the DAMON context and reset the global pointer when damon_start() fails. Otherwise, the context allocated by damon_stat_build_ctx() is leaked, and the stale damon_stat_context pointer will be overwritten on the next enable attempt, making the old allocation permanently unreachable.

Risk And Classification

EPSS: 0.000170000 probability, percentile 0.042650000 (date 2026-06-01)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 369c415e60732b7c8ed33368891581246f580d7a 8a62c58411cbd748d7aeab0e5b0963e33ff47a7a git Not specified
CNA Linux Linux affected 369c415e60732b7c8ed33368891581246f580d7a 50bc1d7e0f3bb6932c8dc5da0907eead0790176b git Not specified
CNA Linux Linux affected 369c415e60732b7c8ed33368891581246f580d7a e04ed278d25bf15769800bf6e35c6737f137186f git Not specified
CNA Linux Linux affected 6.17 Not specified
CNA Linux Linux unaffected 6.17 semver Not specified
CNA Linux Linux unaffected 6.18.27 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.4 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/8a62c58411cbd748d7aeab0e5b0963e33ff47a7a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/50bc1d7e0f3bb6932c8dc5da0907eead0790176b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e04ed278d25bf15769800bf6e35c6737f137186f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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