CVE-2024-26601
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…
Does this matter?
Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.29% probability · 21th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/6b0d48647935e4b8c7b75d1eccb9043fcd4ee581Patch
- https://git.kernel.org/stable/c/78327acd4cdc4a1601af718b781eece577b6b7d4Patch
- https://git.kernel.org/stable/c/94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51aPatch
- https://git.kernel.org/stable/c/c1317822e2de80e78f137d3a2d99febab1b80326Patch
- https://git.kernel.org/stable/c/c9b528c35795b711331ed36dc3dbee90d5812d4ePatch
- https://git.kernel.org/stable/c/ea42d6cffb0dd27a417f410b9d0011e9859328cbPatch
- https://git.kernel.org/stable/c/6b0d48647935e4b8c7b75d1eccb9043fcd4ee581Patch
- https://git.kernel.org/stable/c/78327acd4cdc4a1601af718b781eece577b6b7d4Patch
- https://git.kernel.org/stable/c/94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51aPatch
- https://git.kernel.org/stable/c/c1317822e2de80e78f137d3a2d99febab1b80326Patch
- https://git.kernel.org/stable/c/c9b528c35795b711331ed36dc3dbee90d5812d4ePatch
- https://git.kernel.org/stable/c/ea42d6cffb0dd27a417f410b9d0011e9859328cbPatch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.