5.5

CVE-2022-23034: debian debian_linux Integer Underflow (Wrap or Wraparound)

Modified
AliasesALPINE-CVE-2022-23034UBUNTU-CVE-2022-23034DEBIAN-CVE-2022-23034
Published 25-01-2022Last modified 03-08-2024

Vulnerability summary

CVE-2022-23034 is a medium (CVSS 5.5) Integer Underflow (Wrap or Wraparound) vulnerability in debian debian_linux. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 27% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.34%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 11
DSA-5117-1OPENSUSE-SU-2022:0333-1OPENSUSE-SU-2024:11781-1SUSE-SU-2022:0331-1SUSE-SU-2022:0332-1SUSE-SU-2022:0333-1

Timeline

  1. 25-01-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

27%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.34% 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

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

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

Debian2 products
Alpine1 product
  • xen≥ 3.2.0, < 4.13.4-r3 | ≥ 3.2.0, < 4.14.5-r0 | ≥ 3.2.0, < 4.15.2-r0 | ≥ 3.2.0, < 4.16.1-r0
Fedoraproject1 product
Ubuntu1 product
  • xenAll versions (No fix recorded)
Xen1 product
  • xen≥ 3.2.0, < 4.13.0

5 vendors · 6 products

References

10 links