CVE-2026-46046
Low
No strong exploitation signal.
CVSS base
5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
0.1%
2.6th percentile
CISA KEV
Not listed
Weakness / dates
—
Published 2026-05-27 · modified 2026-09-08
CVSS breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | L | Local |
| Attack Complexity | L | Low |
| Privileges Required | L | Low |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | N | None |
| Integrity | N | None |
| Availability | H | High |
Timeline
- 2026-05-27 — Published (NVD)
- 2026-09-08 — Last modified (NVD)
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all() The commit c8e008b60492 ("ext4: ignore xattrs past end") introduced a refcount leak in when block_csum is false. ext4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to get iloc.bh, but never releases it with brelse().
Affected
References
- https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920
- https://git.kernel.org/stable/c/153ab2c52355fbebcae622db8e7b506492c73a29
- https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8
- https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cf
- https://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708f
- https://git.kernel.org/stable/c/b706d00206a9e82362a9633efbd8b5775650169b
- https://git.kernel.org/stable/c/dd98a5603a212ea9c96c6982ccdbcc748fdb9a56
- https://git.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html