Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.6.16, < 6.6.142 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/26e19622c485e53c3fdb299e822068a0542ddf0cPatch
- https://git.kernel.org/stable/c/60ef1675b652e912f3eb064767af4432393291fdPatch
- https://git.kernel.org/stable/c/91d13e92b983e6c6d7631012c2e20ae8057de9f2Patch
- https://git.kernel.org/stable/c/d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32Patch
- https://git.kernel.org/stable/c/dc416e32baaeb620b9809e9e25fc7b30889686e9Patch
FAQ
What is CVE-2026-64147?
CVE-2026-64147 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 tha...
How severe is CVE-2026-64147?
CVE-2026-64147 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-64147?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.