pds_core: fix debugfs_lookup dentry leak and error handling

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Summary

CVECVE-2026-64147
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:56 UTC
Updated2026-07-19 16:17:56 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: pds_core: fix debugfs_lookup dentry leak and error handling debugfs_lookup() returns a dentry with an elevated reference count that must be released with dput(). The current code discards the returned dentry without calling dput(), causing a reference leak on every firmware reset recovery. Additionally, when CONFIG_DEBUG_FS is disabled, debugfs_lookup() returns ERR_PTR(-ENODEV), not NULL. The current check passes for error pointers and would call dput() on an invalid pointer, causing a crash.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 2bbf2b1c20f934a054172175ccbabcc01fe69ef6 60ef1675b652e912f3eb064767af4432393291fd git Not specified
CNA Linux Linux affected bc90fbe0c3182157d2be100a2f6c2edbb1820677 26e19622c485e53c3fdb299e822068a0542ddf0c git Not specified
CNA Linux Linux affected bc90fbe0c3182157d2be100a2f6c2edbb1820677 91d13e92b983e6c6d7631012c2e20ae8057de9f2 git Not specified
CNA Linux Linux affected bc90fbe0c3182157d2be100a2f6c2edbb1820677 d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32 git Not specified
CNA Linux Linux affected bc90fbe0c3182157d2be100a2f6c2edbb1820677 dc416e32baaeb620b9809e9e25fc7b30889686e9 git Not specified
CNA Linux Linux affected 3ffe14c36985e3174933127c9efad82ac8f3fefb git Not specified
CNA Linux Linux affected 6.6.16 6.6.142 semver Not specified
CNA Linux Linux affected 6.7.4 6.8 semver Not specified
CNA Linux Linux affected 6.8 Not specified
CNA Linux Linux unaffected 6.8 semver Not specified
CNA Linux Linux unaffected 6.6.142 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.92 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.34 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.11 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/60ef1675b652e912f3eb064767af4432393291fd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/dc416e32baaeb620b9809e9e25fc7b30889686e9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/91d13e92b983e6c6d7631012c2e20ae8057de9f2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/26e19622c485e53c3fdb299e822068a0542ddf0c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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