null_blk: fix validation of block size
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]
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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]
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- 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://github.com/CVEProject/cvelistV5/tree/main/cves/2024/41xxx/CVE-2024-41077.json
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://nvd.nist.gov/vuln/detail/CVE-2024-41077