Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2022-50077

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
18/06/2025
Last modified:
17/11/2025

Description

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

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:*:*:*:*:*:*:*:* 4.14.1 (including) 4.14.291 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.15 (including) 4.19.256 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.20 (including) 5.4.211 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.5 (including) 5.10.138 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.63 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 5.19.4 (excluding)
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:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools