CVE-2025-39795

MEDIUM

Linux Kernel - Buffer Overflow

Title source: llm

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.

Scores

CVSS v3 5.5
EPSS 0.0001
EPSS Percentile 1.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Classification

CWE
CWE-674
Status published

Affected Products (9)

linux/linux_kernel < 5.10.241
debian/debian_linux
linux/Kernel < 5.10.241linux
linux/Kernel < 5.15.190linux
linux/Kernel < 6.1.149linux
linux/Kernel < 6.6.103linux
linux/Kernel < 6.12.43linux
linux/Kernel < 6.15.11linux
linux/Kernel < 6.16.2linux

Timeline

Published Sep 12, 2025
Tracked Since Feb 18, 2026