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CVE-2021-46920

kernel: clobbering of SWERR overflow bit on writeback

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Severity

Low

Red Hat Product Security

4.4

CVSS 3.1

Review impact separately from score.

Published · February 27, 2024

Updated · October 2, 2026

Description

A flaw was found in the Linux Kernel. The current code blindly writes over the SWERR and OVERFLOW bits. Write back the bits read so that the driver avoids clobbering the OVERFLOW bit that comes after the register is read.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

CWE-353 · Missing Support for Integrity Check