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.
References (4)
Core 4
Core References
Exploit, Patch, Third Party Advisory x_refsource_misc
https://github.com/torvalds/linux/commit/b1bd5cba3306691c771d558e94baa73e8b0b96b7
Mailing List, Patch, Vendor Advisory x_refsource_misc
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.11
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
Scores
CVSS v3
5.5
EPSS
0.0008
EPSS Percentile
23.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
Status
published
Products (2)
debian/debian_linux
9.0
linux/linux_kernel
< 5.12.11
Published
Aug 08, 2021
Tracked Since
Feb 18, 2026