CVE-2025-39795

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/14beeef4aafecc8a41de534e31fb5be94739392f	Patch
https://git.kernel.org/stable/c/31f2f080898e50cbf2bae62d35f9f2a997547b38	Patch
https://git.kernel.org/stable/c/3b9d69f0e68aa6b0acd9791c45d445154a8c66e9	Patch
https://git.kernel.org/stable/c/418751910044649baa2b424ea31cce3fc4dcc253	Patch
https://git.kernel.org/stable/c/448dfecc7ff807822ecd47a5c052acedca7d09e8	Patch
https://git.kernel.org/stable/c/46aa80ef49594ed7de685ecbc673b291e9a2c159	Patch
https://git.kernel.org/stable/c/5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2	Patch
https://git.kernel.org/stable/c/8b3ce085b52e674290cbfdd07034e7653ffbe4dc	Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-09-12 16:15

Updated : 2026-01-16 20:00

NVD link : CVE-2025-39795

Mitre link : CVE-2025-39795

CVE.ORG link : CVE-2025-39795

JSON object : View

Products Affected

debian

debian_linux

linux

linux_kernel

CWE

CWE-674

Uncontrolled Recursion

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