Vulnerability in Linux Kernel

CVE-2021-38198

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.

EPSS: 0.005 (38.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Public proof-of-concept exploits

References

  • cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (Patch, Mailing List, x_refsource_MISC, Vendor Advisory)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2021-38198?
CVE-2021-38198 is a medium-severity vulnerability in Linux Kernel. CVSS score: 5.5/10. Published 2021-08-08.
How severe is CVE-2021-38198?
Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2021-38198 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.