CVE-2021-38198

low-risk
Published 2021-08-08

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.

Do I need to act?

-
0.08% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (2)

Affected Vendors

Debian Linux

References (8)

Mailing List https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.11
Exploit https://github.com/torvalds/linux/commit/b1bd5cba3306691c771d558e94baa73e8b0b96b...
Mailing List https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
Mailing List https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
Mailing List https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.11
Exploit https://github.com/torvalds/linux/commit/b1bd5cba3306691c771d558e94baa73e8b0b96b...
Mailing List https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
Mailing List https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
25
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 7/34 · Low