CVE-2024-45817 — HIGH (7.3)

Vulnerability Description

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.

CVSS Score

7.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Xen	Xen	>= 4.5.0

Related Weaknesses (CWE)

CWE-209

References

https://xenbits.xenproject.org/xsa/advisory-462.htmlPatchVendor Advisory
http://www.openwall.com/lists/oss-security/2024/09/24/1Mailing ListThird Party Advisory
http://xenbits.xen.org/xsa/advisory-462.htmlPatchVendor Advisory

FAQ

What is CVE-2024-45817?

CVE-2024-45817 is a vulnerability with a CVSS score of 7.3 (HIGH). 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 occur...

How severe is CVE-2024-45817?

CVE-2024-45817 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2024-45817?

Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen.