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🛡️ CVE-2024-9632 on Ubuntu — xorg-server

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A flaw was found in the X.org server. Due to improperly tracked allocation size in _XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially crafted payload, leading to denial of service or local privilege escalation in distributions where the X.org server is run with root privileges.

Distribution advisory

This page covers CVE-2024-9632 as tracked by Ubuntu, for the package xorg-server. The fix is available in version 2:21.1.12-1ubuntu1.1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

UBUNTU-CVE-2024-9632 is classified as CWE-122: Heap-based Buffer Overflow. A write past the end of a heap allocation corrupts allocator metadata or neighbouring objects.

Affected software

UBUNTU-CVE-2024-9632 is recorded against 4 packages.

  • xorg-server (fixed in 2:21.1.12-1ubuntu1.1)
  • xorg-server-hwe-16.04 (fixed in 2:1.19.6-1ubuntu4.1~16.04.6+esm6)
  • xorg-server-hwe-18.04 (fixed in 2:1.20.8-2ubuntu2.2~18.04.11+esm1)
  • xwayland (fixed in 2:23.2.6-1ubuntu0.1)

Timeline and source

Published on 29 October 2024 and last revised on 22 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)

Other advisories for this package

xorg-server has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-122: Heap-based Buffer Overflow) in other software:

CVE-2024-9632 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2024-10-29
Updated 2026-08-20
Modified 2026-04-22
Fix URL N/A

Affected Packages

Software From version Fixed in
xorg-server 2:21.1.12-1ubuntu1.1
xorg-server-hwe-16.04 2:1.19.6-1ubuntu4.1~16.04.6+esm6
xorg-server-hwe-18.04 2:1.20.8-2ubuntu2.2~18.04.11+esm1
xwayland 2:23.2.6-1ubuntu0.1

Site Security Check

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UBUNTU-CVE-2024-9632 is rated CVSS 7.8 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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