CVE-2025-39795
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedSep 12, 2025
First seenSep 12, 2025
Weakness typeCWE-674CWE-674
How to fix
Update
- linux linux_kernel5.10.241, 5.15.190, 6.1.149, 6.6.103, 6.12.43, 6.15.11, 6.16.2 or later
Patches
- git.kernel.org/stable/c/14beeef4aafecc8a41de534e31fb5be94739392f
- git.kernel.org/stable/c/31f2f080898e50cbf2bae62d35f9f2a997547b38
- git.kernel.org/stable/c/3b9d69f0e68aa6b0acd9791c45d445154a8c66e9
- git.kernel.org/stable/c/418751910044649baa2b424ea31cce3fc4dcc253
- git.kernel.org/stable/c/448dfecc7ff807822ecd47a5c052acedca7d09e8
- git.kernel.org/stable/c/46aa80ef49594ed7de685ecbc673b291e9a2c159
- git.kernel.org/stable/c/5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2
- git.kernel.org/stable/c/8b3ce085b52e674290cbfdd07034e7653ffbe4dc
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.10 ≤ v < 5.10.241, 5.11 ≤ v < 5.15.190, 5.16 ≤ v < 6.1.149, 6.2 ≤ v < 6.6.103, 6.7 ≤ v < 6.12.43, 6.13 ≤ v < 6.15.11, 6.16 ≤ v < 6.16.2 | 5.10.241, 5.15.190, 6.1.149, 6.6.103, 6.12.43, 6.15.11, 6.16.2 |
| debian debian_linux | 11.0 | — |
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