7.8

CVE-2023-6377: debian debian_linux Out-of-bounds Read

CVSS: 7.8v3.1HighModified
AliasesSUSE-SU-2023:4925-1SUSE-SU-2023:4926-1SUSE-SU-2023:4933-1
Published 13-12-2023Last modified 23-06-2026
Open JSON

Vulnerability summary

CVE-2023-6377 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in debian debian_linux. EPSS estimates a 1.57% chance of exploitation in the next 30 days, higher than 75% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
1.57%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 27 · Related 10
DLA-3686-1DSA-5576-1MGASA-2024-0009OPENSUSE-SU-2024:13512-1OPENSUSE-SU-2024:13513-1RHSA-2023:7886

Timeline

  1. 13-12-2023
    PublishedVulnerability first disclosed.
  2. 23-06-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

1.57%

Chance of exploitation in the next 30 days

Percentile

75%

Versus all other CVEs

30-day change

0.00 pp

From 1.57% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.57%

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

Suse19 products
  • xorg-x11-server&distro=SUSE Enterprise Storage 7.1< 1.20.3-150200.22.5.85.1
  • xorg-x11-server&distro=SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS< 1.20.3-150200.22.5.85.1
  • xorg-x11-server&distro=SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS< 1.20.3-150200.22.5.85.1
  • xorg-x11-server&distro=SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS< 1.20.3-150200.22.5.85.1
  • xorg-x11-server&distro=SUSE Linux Enterprise Module for Basesystem 15 SP4< 1.20.3-150400.38.35.1
Redhat6 products
  • enterprise_linux_eus9.2
  • tigervnc< 0:1.1.0-25.el6_10.14
  • tigervnc-debuginfo< 0:1.1.0-25.el6_10.14
  • tigervnc-server< 0:1.1.0-25.el6_10.14
  • tigervnc-server-applet< 0:1.1.0-25.el6_10.14
Opensuse4 products
  • xorg-x11-server&distro=openSUSE Leap 15.4< 1.20.3-150200.22.5.85.1 | < 1.20.3-150400.38.35.1
  • xorg-x11-server&distro=openSUSE Leap 15.5< 21.1.4-150500.7.13.1
  • xwayland&distro=openSUSE Leap 15.4< 21.1.4-150400.3.26.1
  • xwayland&distro=openSUSE Leap 15.5< 22.1.5-150500.7.11.1
Ubuntu4 products
  • xorg-serverAll versions (No fix recorded) | < 2:1.18.4-0ubuntu0.12+esm8 | < 2:1.19.6-1ubuntu4.15+esm3 | < 2:1.20.13-1ubuntu1~20.04.12 | < 2:21.1.4-2ubuntu1.7~22.04.5 | < 2:21.1.10-1ubuntu1
  • xorg-server-hwe-16.04All versions (No fix recorded)
  • xorg-server-hwe-18.04All versions (No fix recorded)
  • xwayland< 2:22.1.1-1ubuntu0.9
Debian3 products
  • xorg-server< 2:21.1.10-1 | < 2:1.20.11-1+deb11u10 | < 2:21.1.7-3+deb12u4 | < 2:1.20.4-1+deb10u12
  • xwaylandAll versions (No fix recorded) | < 2:23.2.3-1
  • debian_linuxEOL10.0 | 11.0 | 12.0
X.org2 products
Tigervnc1 product

7 vendors · 39 products

References

45 links
Show all 45 references