What is CVE-2021-46953?

CVE-2021-46953 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.7 out of 10, affecting Linux kernel versions from 4.12 onward and patched in 4.14.233, 4.19.191, 5.4.118 and others. CVE-2021-46953 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-46953?

CVE-2021-46953 has a CVSS score of 6.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2021-46953?

Yes, CVE-2021-46953 has been patched. Fixed versions include 4.14.233, 4.19.191, 5.4.118 and others. If you are running Linux kernel 4.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-46953 actively exploited?

CVE-2021-46953 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-46953

Medium

In the Linux kernel, the following vulnerability has been resolved: ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure When failing the driver probe because of invalid firmware properties, the GTDT driver unmaps the interrupt that it mapped earlier. However, it never checks whether the mapping of the interrupt actially succeeded. Even more, should the firmware report an illegal interrupt number that overlaps with the GIC SGI range, this can result in an IPI being unmapped, and subsequent fireworks (as reported by Dann Frazier). Rework the driver to have a slightly saner behaviour and actually check whether the interrupt has been mapped before unmapping things.

Package Linux Kernel

Published 2024-02-27

Last modified 2024-11-21

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

6.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 4.12 and later are affected. Fixed in 4.14.233, 4.19.191, 5.4.118, 5.10.36, 5.11.20, 5.12.3, 5.13 and their respective stable series.

Affected from

≥ 4.12

Fixed in

✓ 4.14.233 4.14.x ✓ 4.19.191 4.19.x ✓ 5.4.118 5.4.x ✓ 5.10.36 5.10.x ✓ 5.11.20 5.11.x ✓ 5.12.3 5.12.x ✓ 5.13

References

7 total

Kernel Git
https://git.kernel.org/stable/c/1ecd5b129252249b9bc03d7645a7bda512747277

Patch
Kernel Git
https://git.kernel.org/stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8

Patch
Kernel Git
https://git.kernel.org/stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4

Patch
Kernel Git
https://git.kernel.org/stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01

Patch
Kernel Git
https://git.kernel.org/stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305b

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2021-46953

Severity Medium

CVSS score 6.7 / 10

CVSS version 3.1

Published 2024-02-27

Modified 2024-11-21

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-46953?

CVE-2021-46953 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.7 out of 10 . It affects Linux kernel versions from 4.12 onward and has been patched in 4.14.233, 4.19.191, 5.4.118 and others. CVE-2021-46953 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-46953?

CVE-2021-46953 has a CVSS score of 6.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2021-46953?

Yes. CVE-2021-46953 has been patched. Fixed versions include 4.14.233, 4.19.191, 5.4.118 and others. If you are running Linux kernel 4.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-46953 actively exploited?

No. CVE-2021-46953 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.