CVE-2021-38198

Public Exploit

Description

arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.03%

Vendor Advisory kernel.org

Affected: n/a n/a

References

Link	Tags
https://github.com/torvalds/linux/commit/b1bd5cba3306691c771d558e94baa73e8b0b96b7	exploit third party advisory patch
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.11	mailing list patch vendor advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html	third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html	third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-38198?: CVE-2021-38198 has been scored as a medium severity vulnerability.
How to fix CVE-2021-38198?: To fix CVE-2021-38198, 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-2021-38198 being actively exploited in the wild?: It is possible that CVE-2021-38198 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.