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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
bb88e8da00253bea0e7f0f4cdfd7910572d7799f to < 3812cfe6cb0a5988df4fedcdaf9aab677b9cca61affectedbb88e8da00253bea0e7f0f4cdfd7910572d7799f to < e4a552e0b6413c1af2e140b5bc14bb849b411b57affectedbb88e8da00253bea0e7f0f4cdfd7910572d7799f to < fcb23bb31508b62e8a1b32adf6217820e90e29b0affectedbb88e8da00253bea0e7f0f4cdfd7910572d7799f to < 492c73b21fefa36f3869cb2b188ffb7fe37b3a9baffectedbb88e8da00253bea0e7f0f4cdfd7910572d7799f to < 79b09c54c6563df9846ca3094bcfd72082c3e1d7affected
Linux Linux
Default version status: affected
5.17affected0 to < 5.17unaffected6.6.160 to ≤ 6.6.*unaffected6.12.114 to ≤ 6.12.*unaffected6.18.57 to ≤ 6.18.*unaffected7.0.11 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/3812cfe6cb0a5988df4fedcdaf9aab677b9cca61 ↗
- https://git.kernel.org/stable/c/e4a552e0b6413c1af2e140b5bc14bb849b411b57 ↗
- https://git.kernel.org/stable/c/fcb23bb31508b62e8a1b32adf6217820e90e29b0 ↗
- https://git.kernel.org/stable/c/492c73b21fefa36f3869cb2b188ffb7fe37b3a9b ↗
- https://git.kernel.org/stable/c/79b09c54c6563df9846ca3094bcfd72082c3e1d7 ↗