CVE-2026-46046

critical

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().

References

https://git.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298

https://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708f

https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cf

https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8

https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920

Details

Source: Mitre, NVD

Published: 2026-05-27

Updated: 2026-05-27

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical