CVE-2026-64146erofs: fix metabuf leak in inode xattr initialization
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from bb88e8da00253bea0e7f0f4cdfd7910572d7799f before fcb23bb31508b62e8a1b32adf6217820e90e29b0; from bb88e8da00253bea0e7f0f4cdfd7910572d7799f before 492c73b21fefa36f3869cb2b188ffb7fe37b3a9b; from bb88e8da00253bea0e7f0f4cdfd7910572d7799f before 79b09c54c6563df9846ca3094bcfd72082c3e1d7 | CNA record |
linux linux_kernel linux:linux_kernel | from 5.17 before 7.0.11; 7.1; 7.1; 7.1; 7.1 | NVD |
References
- https://git.kernel.org/stable/c/fcb23bb31508b62e8a1b32adf6217820e90e29b0
- https://git.kernel.org/stable/c/492c73b21fefa36f3869cb2b188ffb7fe37b3a9bpatch
- https://git.kernel.org/stable/c/79b09c54c6563df9846ca3094bcfd72082c3e1d7patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.