CVE-2022-49786

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49786
In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: properly pin the parent in blkcg_css_online blkcg_css_online is supposed to pin the blkcg of the parent, but 397c9f46ee4d refactored things and along the way, changed it to pin the css instead. This results in extra pins, and we end up leaking blkcgs and cgroups.

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/d118247e404d6338f7b90636a3c6b95a387ed163 Patch
https://git.kernel.org/stable/c/d7dbd43f4a828fa1d9a8614d5b0ac40aee6375fe Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*
History

07 Nov 2025, 17:49

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/d118247e404d6338f7b90636a3c6b95a387ed163 - () https://git.kernel.org/stable/c/d118247e404d6338f7b90636a3c6b95a387ed163 - Patch
References () https://git.kernel.org/stable/c/d7dbd43f4a828fa1d9a8614d5b0ac40aee6375fe - () https://git.kernel.org/stable/c/d7dbd43f4a828fa1d9a8614d5b0ac40aee6375fe - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: blk-cgroup: fija correctamente el padre en blkcg_css_online. Se supone que blkcg_css_online fija el blkcg del padre, pero 397c9f46ee4d refactorizó las cosas y, de paso, lo modificó para fijar el CSS. Esto genera fijaciones adicionales y terminamos filtrando blkcgs y cgroups.
First Time Linux
Linux linux Kernel
CWE NVD-CWE-noinfo
CPE cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*

01 May 2025, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2025-05-01 15:16

Updated : 2025-11-07 17:49

NVD link : CVE-2022-49786

Mitre link : CVE-2022-49786

CVE.ORG link : CVE-2022-49786

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo