CVE-2021-46920

Medium

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback Current code blindly writes over the SWERR and the OVERFLOW bits. Write back the bits actually read instead so the driver avoids clobbering the OVERFLOW bit that comes after the register is read.

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
High
Availability
None
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected versions

Linux kernel versions 5.6 and later are affected. Fixed in 5.10.32, 5.11.16, 5.12 and their respective stable series.

Affected from
≥ 5.6
Fixed in
✓ 5.10.32 5.10.x ✓ 5.11.16 5.11.x ✓ 5.12

References

3 total

Frequently asked questions

  • What is CVE-2021-46920?

    CVE-2021-46920 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.6 onward and has been patched in 5.10.32, 5.11.16 and 5.12. CVE-2021-46920 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2021-46920?

    CVE-2021-46920 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:H/A:N .

  • Is there a patch available for CVE-2021-46920?

    Yes. CVE-2021-46920 has been patched. Fixed versions include 5.10.32, 5.11.16 and 5.12. If you are running Linux kernel 5.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2021-46920 actively exploited?

    No. CVE-2021-46920 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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