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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2021-46920

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

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • bfe1d56091c1a404b3d4ce7e9809d745fc4453bb to < a5ad12d5d69c63af289a37f05187a0c6fe93553daffected
  • bfe1d56091c1a404b3d4ce7e9809d745fc4453bb to < 02981a44a0e402089775416371bd2e0c935685f8affected
  • bfe1d56091c1a404b3d4ce7e9809d745fc4453bb to < ea941ac294d75d0ace50797aebf0056f6f8f7a7faffected

Linux Linux

Default version status: affected

  • 5.6affected
  • 0 to < 5.6unaffected
  • 5.10.32 to ≤ 5.10.*unaffected
  • 5.11.16 to ≤ 5.11.*unaffected
  • 5.12 to ≤ *unaffected

References