// For flags

CVE-2024-31143

double unlock in x86 guest IRQ handling

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

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.

Una característica opcional de PCI MSI llamada "Mensaje múltiple" permite que un dispositivo utilice múltiples vectores de interrupción consecutivos. A diferencia de MSI-X, la configuración de estos vectores consecutivos debe realizarse de una sola vez. En este manejo se podría tomar una ruta de error en diferentes situaciones, con o sin un bloqueo particular mantenido. Esta ruta de error libera incorrectamente el bloqueo incluso cuando no está retenido actualmente.

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.

Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in privilege escalation, denial of service or information leaks.

*Credits: This issue was discovered by Jan Beulich of SUSE.
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Authentication
Single
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2024-03-28 CVE Reserved
  • 2024-07-18 CVE Published
  • 2024-07-19 EPSS Updated
  • 2024-09-13 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-832: Unlock of a Resource that is not Locked
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Fedoraproject
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Fedora
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*-
Affected
Opensuse
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Leap
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*-
Affected
Suse
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Sle-module-basesystem
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*-
Affected
Suse
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Sle-module-server-applications
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*-
Affected
Suse
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Sle-sdk
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*-
Affected
Suse
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Sle Hpc-espos
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*-
Affected
Suse
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Sle Hpc-ltss
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*-
Affected
Suse
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Sle Hpc
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*-
Affected
Suse
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Sled
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*-
Affected
Suse
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Sles-ltss
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*-
Affected
Suse
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Sles
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*-
Affected
Suse
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Sles Sap
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*-
Affected
Suse
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Suse-manager-proxy
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*-
Affected
Suse
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Suse-manager-server
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*-
Affected
Xen
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Xen
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*-
Affected