CVE-2021-46918

dmaengine: idxd: clear MSIX permission entry on shutdown

Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: clear MSIX permission entry on shutdown Add disabling/clearing of MSIX permission entries on device shutdown to mirror the enabling of the MSIX entries on probe. Current code left the MSIX enabled and the pasid entries still programmed at device shutdown.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.01%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/c84b8982d7aa9b4717dc36a1c6cbc93ee153b500	patch
https://git.kernel.org/stable/c/6df0e6c57dfc064af330071f372f11aa8c584997	patch

Frequently Asked Questions

What is the severity of CVE-2021-46918?: CVE-2021-46918 has been scored as a medium severity vulnerability.
How to fix CVE-2021-46918?: To fix CVE-2021-46918, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-46918 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-46918 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-46918?: CVE-2021-46918 affects Linux Linux, Linux Linux.

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