Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: erofs: fix metabuf leak in inode xattr initialization commit bb88e8da0025 ("erofs: use meta buffers for xattr operations") converted xattr operations to use on-stack erofs_buf instances. erofs_init_inode_xattrs() uses such a metabuf while reading the inline xattr header and shared xattr id array. Some error paths after erofs_read_metabuf() leave through out_unlock without dropping the metabuf, so the folio reference can leak. Consolidate the cleanup at out_unlock. erofs_put_metabuf() is a no-op if no folio has been acquired, and this keeps all paths after taking EROFS_I_BL_XATTR_BIT covered by a single cleanup site.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.17, < 7.0.11 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/492c73b21fefa36f3869cb2b188ffb7fe37b3a9bPatch
- https://git.kernel.org/stable/c/79b09c54c6563df9846ca3094bcfd72082c3e1d7Patch
FAQ
What is CVE-2026-64146?
CVE-2026-64146 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: erofs: fix metabuf leak in inode xattr initialization commit bb88e8da0025 ("erofs: use meta buffers for xattr operations") convert...
How severe is CVE-2026-64146?
CVE-2026-64146 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-2026-64146?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.