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 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.

• 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

Published

Feb 26, 2024

Last Modified

Aug 4, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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