CVE-2026-64146
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.
Affected versions
Linux kernel versions
5.17
and later are affected. Fixed in
7.0.11,
7.1
and their respective stable series.
References
2 totalFrequently asked questions
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What is CVE-2026-64146?
CVE-2026-64146 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.17 onward and has been patched in 7.0.11 and 7.1. CVE-2026-64146 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-64146?
Yes — CVE-2026-64146 has been patched. Fixed versions include 7.0.11 and 7.1. If you are running Linux kernel 5.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-64146 actively exploited?
No — CVE-2026-64146 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.