CVE-2025-21736

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-21736
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

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/250423300b4b0335918be187ef3cade248c06e6a Patch
https://git.kernel.org/stable/c/58b1c6881081f5ddfb9a14dc241a74732c0f855c
https://git.kernel.org/stable/c/6438ef381c183444f7f9d1de18f22661cba1e946 Patch
https://git.kernel.org/stable/c/7649937987fed51ed09985da4019d50189fc534e
https://git.kernel.org/stable/c/8f41df5fd4c11d26e929a85f7239799641f92da7
https://git.kernel.org/stable/c/b9495a9109abc31d3170f7aad7d48aa64610a1a2 Patch
https://git.kernel.org/stable/c/f2bd0f1ab47822fe5bd699c8458b896c4b2edea1 Patch
https://git.kernel.org/stable/c/f3d80f34f58445355fa27b9579a449fb186aa64e Patch
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:*:*:*:*:*:*:*:*
History

13 Mar 2025, 13:15

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/58b1c6881081f5ddfb9a14dc241a74732c0f855c -
  • () https://git.kernel.org/stable/c/7649937987fed51ed09985da4019d50189fc534e -
  • () https://git.kernel.org/stable/c/8f41df5fd4c11d26e929a85f7239799641f92da7 -

06 Mar 2025, 12:21

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/250423300b4b0335918be187ef3cade248c06e6a - () https://git.kernel.org/stable/c/250423300b4b0335918be187ef3cade248c06e6a - Patch
References () https://git.kernel.org/stable/c/6438ef381c183444f7f9d1de18f22661cba1e946 - () https://git.kernel.org/stable/c/6438ef381c183444f7f9d1de18f22661cba1e946 - Patch
References () https://git.kernel.org/stable/c/b9495a9109abc31d3170f7aad7d48aa64610a1a2 - () https://git.kernel.org/stable/c/b9495a9109abc31d3170f7aad7d48aa64610a1a2 - Patch
References () https://git.kernel.org/stable/c/f2bd0f1ab47822fe5bd699c8458b896c4b2edea1 - () https://git.kernel.org/stable/c/f2bd0f1ab47822fe5bd699c8458b896c4b2edea1 - Patch
References () https://git.kernel.org/stable/c/f3d80f34f58445355fa27b9579a449fb186aa64e - () https://git.kernel.org/stable/c/f3d80f34f58445355fa27b9579a449fb186aa64e - Patch
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: se corrigen posibles desbordamientos de int en nilfs_fiemap() Dado que nilfs_bmap_lookup_contig() en nilfs_fiemap() calcula su resultado al estar preparado para pasar por bloques potencialmente maxblocks == INT_MAX, el valor en n puede experimentar un desbordamiento causado por el desplazamiento a la izquierda de blkbits. Si bien es extremadamente improbable que ocurra, no corra riesgos y convierta la expresión de la mano derecha a un tipo más amplio para mitigar el problema. Encontrado por Linux Verification Center (linuxtesting.org) con la herramienta de análisis estático SVACE.
CWE CWE-190
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

27 Feb 2025, 03:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-27 03:15

Updated : 2025-03-13 13:15

NVD link : CVE-2025-21736

Mitre link : CVE-2025-21736

CVE.ORG link : CVE-2025-21736

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-190

Integer Overflow or Wraparound