7.8

CVE-2023-5367: debian debian_linux Out-of-bounds Write

CVSS: 7.8v3.1HighModified
AliasesRHSA-2023:6802RHSA-2023:6808RHSA-2023:7373
Published 25-10-2023Last modified 23-06-2026
Open JSON

Vulnerability summary

CVE-2023-5367 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.8% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.60%
0%100%
Low · -0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 21 · Related 10
DLA-3631-1DSA-5534-1MGASA-2023-0307MGASA-2023-0321OPENSUSE-SU-2024:13361-1OPENSUSE-SU-2024:13362-1

Timeline

  1. 25-10-2023
    PublishedVulnerability first disclosed.
  2. 23-06-2026
    Last modifiedVulnerability information updated.

Description

A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.60%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

-0.02 pp

From 0.62% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.60%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat32 products
Ubuntu4 products
  • xorg-server< 2:1.15.1-0ubuntu2.11+esm8 | < 2:1.18.4-0ubuntu0.12+esm6 | < 2:1.19.6-1ubuntu4.15+esm1 | < 2:1.20.13-1ubuntu1~20.04.9 | < 2:21.1.4-2ubuntu1.7~22.04.2 | < 2:21.1.7-3ubuntu2.1
  • xorg-server-hwe-16.04All versions (No fix recorded)
  • xorg-server-hwe-18.04All versions (No fix recorded)
  • xwayland< 2:22.1.1-1ubuntu0.7 | < 2:23.2.0-1ubuntu0.1
Debian3 products
  • xorg-server< 2:21.1.7-3+deb12u2 | < 2:21.1.9-1
  • xwaylandAll versions (No fix recorded) | < 2:23.2.2-1
  • debian_linuxEOL11.0 | 12.0
X.org2 products
Fedoraproject1 product

5 vendors · 42 products

References

48 links
Show all 48 references