CVE-2025-21736

MEDIUM EPSS 11.3%
Published Feb 27, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Feb 27, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix possible int overflows in nilfs_fiemap() Since nilfs_bmap_lookup_contig() in nilfs_fiemap() calculates its result by being prepared to go through potentially maxblocks == INT_MAX blocks, the value in n may experience an overflow caused by left shift of blkbits. While it is extremely unlikely to occur, play it safe and cast right hand expression to wider type to mitigate the issue. Found by Linux Verification Center (linuxtesting.org) with static analysis tool SVACE.

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
11.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥2.6.38  –  <6.1.129
linuxlinux_kernel*≥6.2  –  <6.6.78
linuxlinux_kernel*≥6.7  –  <6.12.14
linuxlinux_kernel*≥6.13  –  <6.13.3

References 10

  • git.kernel.org https://git.kernel.org/stable/c/250423300b4b0335918be187ef3cade248c06e6a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/58b1c6881081f5ddfb9a14dc241a74732c0f855c
  • git.kernel.org https://git.kernel.org/stable/c/6438ef381c183444f7f9d1de18f22661cba1e946
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7649937987fed51ed09985da4019d50189fc534e
  • git.kernel.org https://git.kernel.org/stable/c/8f41df5fd4c11d26e929a85f7239799641f92da7
  • git.kernel.org https://git.kernel.org/stable/c/b9495a9109abc31d3170f7aad7d48aa64610a1a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f2bd0f1ab47822fe5bd699c8458b896c4b2edea1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f3d80f34f58445355fa27b9579a449fb186aa64e
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/250423300b4b0335918be187ef3cade248c06e6a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6438ef381c183444f7f9d1de18f22661cba1e946
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b9495a9109abc31d3170f7aad7d48aa64610a1a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f2bd0f1ab47822fe5bd699c8458b896c4b2edea1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f3d80f34f58445355fa27b9579a449fb186aa64e
    Patch