CVE-2024-46780

nilfs2: protect references to superblock parameters exposed in sysfs

MEDIUM

5.5

CVSS Score

Published: September 18, 2024 at 07:12 AM UTC

Updated: August 5, 2026 at 12:04 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.17 ≤ v < 4.19.3223.17 ≤ v < 5.10.2263.17 ≤ v < 5.15.1673.17 ≤ v < 5.4.2843.17 ≤ v < 6.1.1103.17 ≤ v < 6.10.103.17 ≤ v < 6.113.17 ≤ v < 6.6.514.20 ≤ v < 5.4.2845.11 ≤ v < 5.15.1675.16 ≤ v < 6.1.1105.5 ≤ v < 5.10.2266.2 ≤ v < 6.6.516.7 ≤ v < 6.10.106.11 rc1 6.11 rc2 6.11 rc3 6.11 rc4 6.11 rc5 6.11 rc6da7141fb78db915680616e15677539fc8140cf53

Vendor states this is fixed in 157c0d94b4c40887329418c70ef4edd1a8d6b4ed (fixed)

Vendor states this is fixed in 19cfeba0e4b8eda51484fcf8cf7d150418e1d880 (fixed)

Vendor states this is fixed in 683408258917541bdb294cd717c210a04381931e (fixed)

Vendor states this is fixed in 8c6e43b3d5f109cf9c61bc188fcc8175404e924f (fixed)

Vendor states this is fixed in 962562d4c70c5cdeb4e955d63ff2017c4eca1aad (fixed)

Vendor states this is fixed in b14e7260bb691d7f563f61da07d61e3c8b59a614 (fixed)

Vendor states this is fixed in b90beafac05931cbfcb6b1bd4f67c1923f47040e (fixed)

Vendor states this is fixed in ba97ba173f9625d5f34a986088979eae8b80d38e (fixed)

Vendor states this is fixed in 3.17 (unaffected)

Vendor states this is fixed in 4.19.322 (unaffected)

Vendor states this is fixed in 5.10.226 (unaffected)

Vendor states this is fixed in 5.15.167 (unaffected)