CVE-2024-26601

MEDIUM
Published Feb 26, 2024 Modified Nov 21, 2024

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.

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CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/6b0d48647935e4b8c7b75d1eccb9043fcd4ee581 https://git.kernel.org/stable/c/78327acd4cdc4a1601af718b781eece577b6b7d4 https://git.kernel.org/stable/c/94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51a https://git.kernel.org/stable/c/c1317822e2de80e78f137d3a2d99febab1b80326 https://git.kernel.org/stable/c/c9b528c35795b711331ed36dc3dbee90d5812d4e https://git.kernel.org/stable/c/ea42d6cffb0dd27a417f410b9d0011e9859328cb https://git.kernel.org/stable/c/6b0d48647935e4b8c7b75d1eccb9043fcd4ee581 https://git.kernel.org/stable/c/78327acd4cdc4a1601af718b781eece577b6b7d4 https://git.kernel.org/stable/c/94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51a https://git.kernel.org/stable/c/c1317822e2de80e78f137d3a2d99febab1b80326 https://git.kernel.org/stable/c/c9b528c35795b711331ed36dc3dbee90d5812d4e https://git.kernel.org/stable/c/ea42d6cffb0dd27a417f410b9d0011e9859328cb

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2024-26601? +
CVE-2024-26601 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2024-26601? +
CVE-2024-26601 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-26601? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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