CVE-2022-50077

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-50077
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix reference count leak in aa_pivotroot() The aa_pivotroot() function has a reference counting bug in a specific path. When aa_replace_current_label() returns on success, the function forgets to decrement the reference count of “target”, which is increased earlier by build_pivotroot(), causing a reference leak. Fix it by decreasing the refcount of “target” in that path.

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/11c3627ec6b56c1525013f336f41b79a983b4d46 Patch
https://git.kernel.org/stable/c/2ceeb3296e9dde1d5772348046affcefdea605e2 Patch
https://git.kernel.org/stable/c/3ca40ad7afae144169a43988ef1a3f16182faf0a Patch
https://git.kernel.org/stable/c/64103ea357734b82384c925cba4758fdb909be0c Patch
https://git.kernel.org/stable/c/d53194707d2a1851be027cd74266b96ceff799d3 Patch
https://git.kernel.org/stable/c/ef6fb6f0d0d8440595b45a7e53c6162c737177f4 Patch
https://git.kernel.org/stable/c/f4d5c7796571624e3f380b447ada52834270a287 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc8:*:*:*:*:*:*
History

17 Nov 2025, 19:27

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/11c3627ec6b56c1525013f336f41b79a983b4d46 - () https://git.kernel.org/stable/c/11c3627ec6b56c1525013f336f41b79a983b4d46 - Patch
References () https://git.kernel.org/stable/c/2ceeb3296e9dde1d5772348046affcefdea605e2 - () https://git.kernel.org/stable/c/2ceeb3296e9dde1d5772348046affcefdea605e2 - Patch
References () https://git.kernel.org/stable/c/3ca40ad7afae144169a43988ef1a3f16182faf0a - () https://git.kernel.org/stable/c/3ca40ad7afae144169a43988ef1a3f16182faf0a - Patch
References () https://git.kernel.org/stable/c/64103ea357734b82384c925cba4758fdb909be0c - () https://git.kernel.org/stable/c/64103ea357734b82384c925cba4758fdb909be0c - Patch
References () https://git.kernel.org/stable/c/d53194707d2a1851be027cd74266b96ceff799d3 - () https://git.kernel.org/stable/c/d53194707d2a1851be027cd74266b96ceff799d3 - Patch
References () https://git.kernel.org/stable/c/ef6fb6f0d0d8440595b45a7e53c6162c737177f4 - () https://git.kernel.org/stable/c/ef6fb6f0d0d8440595b45a7e53c6162c737177f4 - Patch
References () https://git.kernel.org/stable/c/f4d5c7796571624e3f380b447ada52834270a287 - () https://git.kernel.org/stable/c/f4d5c7796571624e3f380b447ada52834270a287 - Patch
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: apparmor: se corrige una fuga de referencias en aa_pivotroot(). La función aa_pivotroot() presenta un error de conteo de referencias en una ruta específica. Cuando aa_replace_current_label() retorna con éxito, la función olvida decrementar el conteo de referencias de "target", que se incrementa previamente mediante build_pivotroot(), lo que provoca una fuga de referencias. Para solucionarlo, reduzca el conteo de referencias de "target" en esa ruta.
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE NVD-CWE-Other
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:4.14:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc8:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.14:rc2:*:*:*:*:*:*

18 Jun 2025, 11:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-06-18 11:15

Updated : 2025-11-17 19:27

NVD link : CVE-2022-50077

Mitre link : CVE-2022-50077

CVE.ORG link : CVE-2022-50077

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-Other