4.7

CVE-2023-5380: debian debian_linux Use After Free

CVSS: 4.7v3.1MediumModified
AliasesRHSA-2024:3067UBUNTU-CVE-2023-5380DEBIAN-CVE-2023-5380
Published 25-10-2023Last modified 23-06-2026
Open JSON

Vulnerability summary

CVE-2023-5380 is a medium (CVSS 4.7) Use After Free vulnerability in debian debian_linux. EPSS estimates a 0.69% chance of exploitation in the next 30 days, higher than 52% of scored vulnerabilities.

Overall risk
19/100
0100
Low · default modelHow is this calculated?
CVSS score
4.7/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.69%
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 15 · Related 7
DLA-3631-1DSA-5534-1MGASA-2023-0307MGASA-2023-0321OPENSUSE-SU-2024:13362-1RHSA-2023:7428

Timeline

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

Description

A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if the pointer is warped from within a window on one screen to the root window of the other screen and if the original window is destroyed followed by another window being destroyed.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.69%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

-0.02 pp

From 0.71% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.69%

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

Redhat13 products
  • enterprise_linuxEOL7.0 | 8.0 | 9.0
  • tigervnc< 0:1.13.1-8.el8
  • tigervnc-debuginfo< 0:1.13.1-8.el8
  • tigervnc-debugsource< 0:1.13.1-8.el8
  • tigervnc-icons< 0:1.13.1-8.el8
Ubuntu3 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)
Debian2 products
  • xorg-server< 2:21.1.7-3+deb12u2 | < 2:21.1.9-1
  • debian_linuxEOL11.0 | 12.0
X.org2 products
Fedoraproject1 product

5 vendors · 21 products

References

28 links
Show all 28 references