CVE-2021-46920 - CVE House
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Status published Unknown CVE-2021-46920

dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
bfe1d56091c1a404b3d4ce7e9809d745fc4453bb, 5.6, 0, 5.10.32, 5.11.16, 5.12

Timeline

Official Publish: February 27th, 2024
Last Modified: May 11th, 2026
Added to House: July 21st, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.