CVE-2025-21745

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-21745
In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: Fix class @block_class's subsystem refcount leakage blkcg_fill_root_iostats() iterates over @block_class's devices by class_dev_iter_(init|next)(), but does not end iterating with class_dev_iter_exit(), so causes the class's subsystem refcount leakage. Fix by ending the iterating with class_dev_iter_exit().

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/2ce09aabe009453d641a2ceb79e6461a2d4f3876 Patch
https://git.kernel.org/stable/c/38287f779b34dfe959b4b681e909f2d3d52b88be
https://git.kernel.org/stable/c/431b6ef2714be4d5babb802114987541a88b43b0 Patch
https://git.kernel.org/stable/c/67c7f213e052b1aa6caba4a7e25e303bc6997126 Patch
https://git.kernel.org/stable/c/993121481b5a87829f1e8163f47158b72679f309 Patch
https://git.kernel.org/stable/c/d1248436cbef1f924c04255367ff4845ccd9025e Patch
https://git.kernel.org/stable/c/ffb494f1e7a047bd7a41b13796fcfb08fe5beafb
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/38287f779b34dfe959b4b681e909f2d3d52b88be -
  • () https://git.kernel.org/stable/c/ffb494f1e7a047bd7a41b13796fcfb08fe5beafb -

05 Mar 2025, 18:47

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: blk-cgroup: Se corrige la pérdida de recuento de referencias del subsistema de la clase @block_class blkcg_fill_root_iostats() itera sobre los dispositivos de @block_class mediante class_dev_iter_(init|next()), pero no finaliza la iteración con class_dev_iter_exit(), por lo que provoca la pérdida de recuento de referencias del subsistema de la clase. Se soluciona finalizando la iteración con class_dev_iter_exit().
CWE NVD-CWE-Other
References () https://git.kernel.org/stable/c/2ce09aabe009453d641a2ceb79e6461a2d4f3876 - () https://git.kernel.org/stable/c/2ce09aabe009453d641a2ceb79e6461a2d4f3876 - Patch
References () https://git.kernel.org/stable/c/431b6ef2714be4d5babb802114987541a88b43b0 - () https://git.kernel.org/stable/c/431b6ef2714be4d5babb802114987541a88b43b0 - Patch
References () https://git.kernel.org/stable/c/67c7f213e052b1aa6caba4a7e25e303bc6997126 - () https://git.kernel.org/stable/c/67c7f213e052b1aa6caba4a7e25e303bc6997126 - Patch
References () https://git.kernel.org/stable/c/993121481b5a87829f1e8163f47158b72679f309 - () https://git.kernel.org/stable/c/993121481b5a87829f1e8163f47158b72679f309 - Patch
References () https://git.kernel.org/stable/c/d1248436cbef1f924c04255367ff4845ccd9025e - () https://git.kernel.org/stable/c/d1248436cbef1f924c04255367ff4845ccd9025e - Patch

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-2025-21745

Mitre link : CVE-2025-21745

CVE.ORG link : CVE-2025-21745

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-Other