CVE-2024-41077

null_blk: fix validation of block size

EPSS 0.2%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

29 Jul 2024Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

In the Linux kernel, the following vulnerability has been resolved: null_blk: fix validation of block size Block size should be between 512 and PAGE_SIZE and be a power of 2. The current check does not validate this, so update the check. Without this patch, null_blk would Oops due to a null pointer deref when loaded with bs=1536 [1]. [axboe: remove unnecessary braces and != 0 check]

Affected products

Linux · Linux

References

https://git.kernel.org/stable/c/08f03186b96e25e3154916a2e70732557c770ea7 https://git.kernel.org/stable/c/2772ed2fc075eef7df3789906fc9dae01e4e132e https://git.kernel.org/stable/c/9625afe1dd4a158a14bb50f81af9e2dac634c0b1 https://git.kernel.org/stable/c/9b873bdaae64bddade9d8c6df23c8a31948d47d0 https://git.kernel.org/stable/c/c462ecd659b5fce731f1d592285832fd6ad54053 https://git.kernel.org/stable/c/f92409a9da02f27d05d713bff5f865e386cef9b3 https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html