CVE-2026-64147
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
19/07/2026
Last modified:
30/07/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
pds_core: fix debugfs_lookup dentry leak and error handling<br />
<br />
debugfs_lookup() returns a dentry with an elevated reference count that<br />
must be released with dput(). The current code discards the returned<br />
dentry without calling dput(), causing a reference leak on every<br />
firmware reset recovery.<br />
<br />
Additionally, when CONFIG_DEBUG_FS is disabled, debugfs_lookup()<br />
returns ERR_PTR(-ENODEV), not NULL. The current check passes for error<br />
pointers and would call dput() on an invalid pointer, causing a crash.
Impact
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/26e19622c485e53c3fdb299e822068a0542ddf0c
- https://git.kernel.org/stable/c/60ef1675b652e912f3eb064767af4432393291fd
- https://git.kernel.org/stable/c/91d13e92b983e6c6d7631012c2e20ae8057de9f2
- https://git.kernel.org/stable/c/d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32
- https://git.kernel.org/stable/c/dc416e32baaeb620b9809e9e25fc7b30889686e9



