What is CVE-2021-46971?

CVE-2021-46971 is a Low severity Linux kernel vulnerability with a CVSS score of 3.3 out of 10, affecting Linux kernel versions from 5.4 onward and patched in 5.4.117, 5.10.35, 5.11.19 and others. CVE-2021-46971 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-46971?

CVE-2021-46971 has a CVSS score of 3.3 out of 10, rated Low severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Is there a patch available for CVE-2021-46971?

Yes, CVE-2021-46971 has been patched. Fixed versions include 5.4.117, 5.10.35, 5.11.19 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-46971 actively exploited?

CVE-2021-46971 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-46971

Low

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix unconditional security_locked_down() call Currently, the lockdown state is queried unconditionally, even though its result is used only if the PERF_SAMPLE_REGS_INTR bit is set in attr.sample_type. While that doesn't matter in case of the Lockdown LSM, it causes trouble with the SELinux's lockdown hook implementation. SELinux implements the locked_down hook with a check whether the current task's type has the corresponding "lockdown" class permission ("integrity" or "confidentiality") allowed in the policy. This means that calling the hook when the access control decision would be ignored generates a bogus permission check and audit record. Fix this by checking sample_type first and only calling the hook when its result would be honored.

Package Linux Kernel

Published 2024-02-27

Last modified 2025-01-08

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

3.3

out of 10

Low

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Vector string

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

Affected versions

Linux kernel versions 5.4 and later are affected. Fixed in 5.4.117, 5.10.35, 5.11.19, 5.12.2, 5.13 and their respective stable series.

Affected from

≥ 5.4

Fixed in

✓ 5.4.117 5.4.x ✓ 5.10.35 5.10.x ✓ 5.11.19 5.11.x ✓ 5.12.2 5.12.x ✓ 5.13

References

5 total

Kernel Git
https://git.kernel.org/stable/c/08ef1af4de5fe7de9c6d69f1e22e51b66e385d9b

Patch
Kernel Git
https://git.kernel.org/stable/c/4348d3b5027bc3ff6336368b6c60605d4ef8e1ce

Patch
Kernel Git
https://git.kernel.org/stable/c/b246759284d6a2bc5b6f1009caeeb3abce2ec9ff

Patch
Kernel Git
https://git.kernel.org/stable/c/c7b0208ee370b89d20486fae71cd9abb759819c1

Patch
Kernel Git
https://git.kernel.org/stable/c/f5809ca4c311b71bfaba6d13f4e39eab0557895e

Patch

Details

CVE ID CVE-2021-46971

Severity Low

CVSS score 3.3 / 10

CVSS version 3.1

Published 2024-02-27

Modified 2025-01-08

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-46971?

CVE-2021-46971 is a Low severity Linux kernel vulnerability with a CVSS score of 3.3 out of 10 . It affects Linux kernel versions from 5.4 onward and has been patched in 5.4.117, 5.10.35, 5.11.19 and others. CVE-2021-46971 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-46971?

CVE-2021-46971 has a CVSS score of 3.3 out of 10, rated Low severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
Is there a patch available for CVE-2021-46971?

Yes. CVE-2021-46971 has been patched. Fixed versions include 5.4.117, 5.10.35, 5.11.19 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-46971 actively exploited?

No. CVE-2021-46971 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.