CVE-2024-45817 (GCVE-0-2024-45817)
Vulnerability from cvelistv5 – Published: 2024-09-25 10:31 – Updated: 2024-11-20 21:33
VLAI?
Title
x86: Deadlock in vlapic_error()
Summary
In x86's APIC (Advanced Programmable Interrupt Controller) architecture,
error conditions are reported in a status register. Furthermore, the OS
can opt to receive an interrupt when a new error occurs.
It is possible to configure the error interrupt with an illegal vector,
which generates an error when an error interrupt is raised.
This case causes Xen to recurse through vlapic_error(). The recursion
itself is bounded; errors accumulate in the the status register and only
generate an interrupt when a new status bit becomes set.
However, the lock protecting this state in Xen will try to be taken
recursively, and deadlock.
Severity ?
7.3 (High)
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
Credits
This issue was discovered after a BUGSENG team working on MISRA C
compliance of Xen pointed attention to ECLAIR reports for MISRA C Rule
17.2 (Functions shall not call themselves, either directly or
indirectly).
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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