Description
In 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.
Affected products
linux: linux kernel
References5
- git.kernel.org/stable/c/26e19622c485e53c3fdb299e822068a0542ddf0c Patch
- git.kernel.org/stable/c/60ef1675b652e912f3eb064767af4432393291fd Patch
- git.kernel.org/stable/c/91d13e92b983e6c6d7631012c2e20ae8057de9f2 Patch
- git.kernel.org/stable/c/d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32 Patch
- git.kernel.org/stable/c/dc416e32baaeb620b9809e9e25fc7b30889686e9 Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 14 November 2026
- CWE
- CWE-401
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