VYPR
Unrated severityNVD Advisory· Published Feb 27, 2024· Updated May 4, 2025

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

CVE-2021-46920

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.

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Affected products

45

Patches

Vulnerability mechanics

References

3

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