7.2

CVE-2022-26364: debian debian_linux

Modified
AliasesALPINE-CVE-2022-26364UBUNTU-CVE-2022-26364DEBIAN-CVE-2022-26364
Published 09-06-2022Last modified 03-08-2024

Vulnerability summary

CVE-2022-26364 is a high (CVSS 7.2) vulnerability in debian debian_linux. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 43.2% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 6.7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.2/10
010
High · v2.0 (NVD)
EPSS score
0.51%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 15 · Related 14
DSA-5184-1SUSE-SU-2022:2065-1SUSE-SU-2022:2084-1SUSE-SU-2022:2158-1SUSE-SU-2022:2164-1SUSE-SU-2022:2296-1

Timeline

  1. 09-06-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

x86 pv: Insufficient care with non-coherent mappings T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to maintain invariants required for Xen's safety, e.g. PV guests may not have direct writeable access to pagetables; updates need auditing by Xen. Unfortunately, Xen's safety logic doesn't account for CPU-induced cache non-coherency; cases where the CPU can cause the content of the cache to be different to the content in main memory. In such cases, Xen's safety logic can incorrectly conclude that the contents of a page is safe.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.51%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.50% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian2 products
Alpine1 product
  • xen< 4.14.5-r1 | < 4.15.2-r1 | < 4.16.1-r1 | < 4.16.1-r2
Fedoraproject1 product
Ubuntu1 product
  • xenAll versions (No fix recorded)

4 vendors · 5 products

References

13 links
Show all 13 references