What is CVE-2022-50077?

CVE-2022-50077 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.14 onward and patched in 4.14.291, 4.19.256, 5.4.211 and others. CVE-2022-50077 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-50077?

CVE-2022-50077 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-50077?

Yes, CVE-2022-50077 has been patched. Fixed versions include 4.14.291, 4.19.256, 5.4.211 and others. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-50077 actively exploited?

CVE-2022-50077 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-50077

Medium

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.

Package Linux Kernel

Published 2025-06-18

Last modified 2025-11-17

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 4.14 and later are affected. Fixed in 4.14.291, 4.19.256, 5.4.211, 5.10.138, 5.15.63, 5.19.4, 6.0 and their respective stable series.

Affected from

≥ 4.14

Fixed in

✓ 4.14.291 4.14.x ✓ 4.19.256 4.19.x ✓ 5.4.211 5.4.x ✓ 5.10.138 5.10.x ✓ 5.15.63 5.15.x ✓ 5.19.4 5.19.x ✓ 6.0

References

The following references provide additional information about CVE-2022-50077 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/11c3627ec6b56c1525013f336f41b79a983b4d46
Patch
Kernel patch commit
https://git.kernel.org/stable/c/2ceeb3296e9dde1d5772348046affcefdea605e2
Patch
Kernel patch commit
https://git.kernel.org/stable/c/3ca40ad7afae144169a43988ef1a3f16182faf0a
Patch

7 patch commits total View all on NVD

Details

CVE ID CVE-2022-50077

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-06-18

Modified 2025-11-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-50077?

CVE-2022-50077 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.14 onward and has been patched in 4.14.291, 4.19.256, 5.4.211 and others. CVE-2022-50077 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-50077?

CVE-2022-50077 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-50077?

Yes — CVE-2022-50077 has been patched. Fixed versions include 4.14.291, 4.19.256, 5.4.211 and others. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-50077 actively exploited?

No — CVE-2022-50077 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.