Description
In the Linux kernel, the following vulnerability has been resolved: block: avoid possible overflow for chunk_sectors check in blk_stack_limits() In blk_stack_limits(), we check that the t->chunk_sectors value is a multiple of the t->physical_block_size value. However, by finding the chunk_sectors value in bytes, we may overflow the unsigned int which holds chunk_sectors, so change the check to be based on sectors.
Affected products
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/stable/c/14beeef4aafecc8a41de534e31fb5be94739392f Patch
- git.kernel.org/stable/c/31f2f080898e50cbf2bae62d35f9f2a997547b38 Patch
- git.kernel.org/stable/c/3b9d69f0e68aa6b0acd9791c45d445154a8c66e9 Patch
- git.kernel.org/stable/c/418751910044649baa2b424ea31cce3fc4dcc253 Patch
- git.kernel.org/stable/c/448dfecc7ff807822ecd47a5c052acedca7d09e8 Patch
- git.kernel.org/stable/c/46aa80ef49594ed7de685ecbc673b291e9a2c159 Patch
- git.kernel.org/stable/c/5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2 Patch
- git.kernel.org/stable/c/8b3ce085b52e674290cbfdd07034e7653ffbe4dc Patch
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html Third Party Advisory
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 8 November 2026
- CWE
- CWE-674
Could this be exploited in your environment?
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