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Fencer Vulns
medium 6.7

CVE-2023-21264 json

In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a memory access check in the wrong place.

published 2023-08-14 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-25432

cvss
6.7
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits
0
none known

Summary

In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a memory access check in the wrong place. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Patch / fix

  • linux Debian 14, Debian 13 6.3.7-1

debian advisories DEBIAN-CVE-2023-21264

  • linux-aws-6.2 Ubuntu 22.04 LTS 6.2.0-1012.12~22.04.1
  • linux-gcp-6.2 Ubuntu 22.04 LTS 6.2.0-1014.14~22.04.1
  • linux-hwe-6.2 Ubuntu 22.04 LTS 6.2.0-33.33~22.04.1
  • linux-azure-6.2 Ubuntu 22.04 LTS 6.2.0-1012.12~22.04.1
  • linux-nvidia-6.2 Ubuntu 22.04 LTS 6.2.0-1011.11
  • linux-lowlatency-hwe-6.2 Ubuntu 22.04 LTS 6.2.0-1013.13~22.04.1

ubuntu advisories UBUNTU-CVE-2023-21264

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Google Android

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.