CVE-2025-21736

Severity CVSS v4.0:

Pending analysis

Type:

CWE-190 Integer Overflow or Wraparound

Publication date:

27/02/2025

Last modified:

13/03/2025

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.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	2.6.38 (including)	6.1.129 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.78 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.14 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.13.3 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-21736

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools