What is CVE-2021-46908?

CVE-2021-46908 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.8 onward and patched in 5.10.32, 5.11.16 and 5.12. CVE-2021-46908 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-46908?

CVE-2021-46908 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-2021-46908?

Yes, CVE-2021-46908 has been patched. Fixed versions include 5.10.32, 5.11.16 and 5.12. If you are running Linux kernel 5.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-46908 actively exploited?

CVE-2021-46908 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-46908

Medium

In the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypass_spec_v1 flag instead of allow_ptr_leaks.

Package Linux Kernel

Published 2024-02-27

Last modified 2024-11-21

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 5.8 and later are affected. Fixed in 5.10.32, 5.11.16, 5.12 and their respective stable series.

Affected from

≥ 5.8

Fixed in

✓ 5.10.32 5.10.x ✓ 5.11.16 5.11.x ✓ 5.12

References

3 total

Kernel Git
https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51

Patch
Kernel Git
https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6

Patch
Kernel Git
https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be

Patch

Details

CVE ID CVE-2021-46908

Severity Medium

CVSS score 5.5 / 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-2021-46908?

CVE-2021-46908 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.8 onward and has been patched in 5.10.32, 5.11.16 and 5.12. CVE-2021-46908 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-46908?

CVE-2021-46908 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-2021-46908?

Yes. CVE-2021-46908 has been patched. Fixed versions include 5.10.32, 5.11.16 and 5.12. If you are running Linux kernel 5.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-46908 actively exploited?

No. CVE-2021-46908 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.