PT-2026-37071 · Linux · Linux Kernel
Published
2026-05-05
·
Updated
2026-06-15
·
CVE-2026-43068
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
An issue exists in the ext4 file system where the kernel may attempt to allocate blocks from a corrupted block group. This occurs because when
EXT4 MB GRP BBITMAP CORRUPT(e4b->bd info) is true, the ext4 mb load buddy() function may return an error, leading to a failure in block allocation. This failure can result in data loss, as indicated by delayed block allocation errors. The technical flow involves the ext4 mb find by goal() function calling ext4 mb load buddy(), which further triggers ext4 mb load buddy gfp(), ext4 mb init cache(), ext4 read block bitmap nowait(), ext4 wait block bitmap(), and finally ext4 validate block bitmap(), where the corruption is identified.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Memory Leak
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Linux Kernel