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.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-25)

CWE

CWE-401

Published

2026-07-19

Modified

2026-10-21

Record from

the NVD, synced 2026-10-22

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/3812cfe6cb0a5988df4fedcdaf9aab677b9cca61
• https://git.kernel.org/stable/c/492c73b21fefa36f3869cb2b188ffb7fe37b3a9b
• https://git.kernel.org/stable/c/79b09c54c6563df9846ca3094bcfd72082c3e1d7
• https://git.kernel.org/stable/c/e4a552e0b6413c1af2e140b5bc14bb849b411b57
• https://git.kernel.org/stable/c/fcb23bb31508b62e8a1b32adf6217820e90e29b0

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