CVEvulnerability

CVE-2024-26601

5.5 MEDIUM Published 2024-02-26 Modified 2026-08-04 Official page ↗
Status
Modified
Published
2024-02-26
Last modified
2026-08-04
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: regenerate buddy after block freeing failed if under fc replay This mostly reverts commit 6bd97bf273bd ("ext4: remove redundant mb_regenerate_buddy()") and reintroduces mb_regenerate_buddy(). Based on code in mb_free_blocks(), fast commit replay can end up marking as free blocks that are already marked as such. This causes corruption of the buddy bitmap so we need to regenerate it in that case.

Affected configurations

• linux linux kernel (< 5.10.211) • linux linux kernel (>= 5.11.0 < 5.15.150) • linux linux kernel (>= 5.16.0 < 6.1.78) • linux linux kernel (>= 6.2.0 < 6.6.17) • linux linux kernel (>= 6.7.0 < 6.7.5)

References