CVE-2025-39795

MEDIUM EPSS 4.5%
Published Sep 12, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 12, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
4.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-674

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel*≥5.10  –  <5.10.241
linuxlinux_kernel*≥5.11  –  <5.15.190
linuxlinux_kernel*≥5.16  –  <6.1.149
linuxlinux_kernel*≥6.2  –  <6.6.103
linuxlinux_kernel*≥6.7  –  <6.12.43
linuxlinux_kernel*≥6.13  –  <6.15.11
linuxlinux_kernel*≥6.16  –  <6.16.2
debiandebian_linux11.0any

References 12

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-032379.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-082556.html
  • git.kernel.org https://git.kernel.org/stable/c/14beeef4aafecc8a41de534e31fb5be94739392f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/31f2f080898e50cbf2bae62d35f9f2a997547b38
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3b9d69f0e68aa6b0acd9791c45d445154a8c66e9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/418751910044649baa2b424ea31cce3fc4dcc253
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/448dfecc7ff807822ecd47a5c052acedca7d09e8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/46aa80ef49594ed7de685ecbc673b291e9a2c159
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8b3ce085b52e674290cbfdd07034e7653ffbe4dc
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
    Third Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Third Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/14beeef4aafecc8a41de534e31fb5be94739392f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/31f2f080898e50cbf2bae62d35f9f2a997547b38
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3b9d69f0e68aa6b0acd9791c45d445154a8c66e9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/418751910044649baa2b424ea31cce3fc4dcc253
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/448dfecc7ff807822ecd47a5c052acedca7d09e8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/46aa80ef49594ed7de685ecbc673b291e9a2c159
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8b3ce085b52e674290cbfdd07034e7653ffbe4dc
    Patch