CVE-2024-46780: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: nilfs2: protect references to superblock parameters exposed in sysfs The superblock buffers of nilfs2 can not only be overwritten at runtime for modifications/repairs, but they are also regularly swapped, replaced during resizing, and even abandoned when degrading to one side due to backing device issues. So, accessing them requires mutual exclusion using the reader/writer semaphore "nilfs->ns_sem". Some sysfs attribute show methods read this superblock buffer without the necessary mutual exclusion, which can cause problems with pointer dereferencing and memory access, so fix it.

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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	Versions
linux	linux_kernel	3.17 — 4.19.322
linux	linux_kernel	4.20 — 5.4.284
linux	linux_kernel	5.5 — 5.10.226
linux	linux_kernel	5.11 — 5.15.167
linux	linux_kernel	5.16 — 6.1.110
linux	linux_kernel	6.2 — 6.6.51
linux	linux_kernel	6.7 — 6.10.10
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/157c0d94b4c40887329418c70ef4edd1a8d6b4ed https://git.kernel.org/stable/c/19cfeba0e4b8eda51484fcf8cf7d150418e1d880 https://git.kernel.org/stable/c/683408258917541bdb294cd717c210a04381931e https://git.kernel.org/stable/c/8c6e43b3d5f109cf9c61bc188fcc8175404e924f https://git.kernel.org/stable/c/962562d4c70c5cdeb4e955d63ff2017c4eca1aad https://git.kernel.org/stable/c/b14e7260bb691d7f563f61da07d61e3c8b59a614 https://git.kernel.org/stable/c/b90beafac05931cbfcb6b1bd4f67c1923f47040e https://git.kernel.org/stable/c/ba97ba173f9625d5f34a986088979eae8b80d38e

Other References

https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-46780? +

In the Linux kernel, the following vulnerability has been resolved: nilfs2: protect references to superblock parameters exposed in sysfs The superblock buffers of nilfs2 can not only be overwritten at runtime for modifications/repairs, but they are also regularly swapped, replaced during resizing, and even abandoned when degrading to one side due to backing device issues. So, accessing them requires mutual exclusion using the reader/writer semaphore "nilfs->ns_sem". Some sysfs attribute show methods read this superblock buffer without the necessary mutual exclusion, which can cause problems with pointer dereferencing and memory access, so fix it. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-46780? +

CVE-2024-46780 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-2024-46780? +

CVE-2024-46780 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-2024-46780? +

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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CVE-2024-46780