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🛡️ CVE-2024-31143 — xen

🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-832 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

An optional feature of PCI MSI called "Multiple Message" allows a

device to use multiple consecutive interrupt vectors. Unlike for MSI-X,

the setting up of these consecutive vectors needs to happen all in one

go. In this handling an error path could be taken in different

situations, with or without a particular lock held. This error path

wrongly releases the lock even when it is not currently held.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, 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:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
  • 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

CVE-2024-31143 is classified as CWE-832: Unlock of a Resource that is not Locked. The product attempts to unlock a resource that is not locked.

Affected software

CVE-2024-31143 is recorded against 1 package.

  • xen (from 4.4.0)

Timeline and source

Published on 18 July 2024 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

xenbits.xenproject.org
www.openwall.com
xenbits.xen.org
xenbits.xenproject.org

Other advisories for this package

xen 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-832: Unlock of a Resource that is not Locked) in other software:

CVE-2024-31143 on other distributions

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

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-832
Public Exploit ✅ No
Source NVD
Published 2024-07-18
Updated 2026-08-20
Modified 2026-06-17

Affected Packages

Software From version Fixed in
xen 4.4.0 —

Site Security Check

Is xen part of your stack?

CVE-2024-31143 is rated CVSS 7.5 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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