CVE-2026-46046
Published: May 28, 2026Last modified: June 24, 2026
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().
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.175-r0) |
| 25 LTS | linux-lts | Fixed (6.12.87-r0) | |
| Stream | linux-lts | Fixed (6.18.35-r1) |
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