Improper locking in Xen - CVE-2024-31143
Published: July 17, 2024
Vulnerability identifier: #VU94499
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H/E:U/U:Green
CVE-ID: CVE-2024-31143
CWE-ID: CWE-667
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Xen Project
Affected software:
Xen
Xen
Detailed vulnerability description
The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.
The vulnerability exists due to double unlock in x86 guest IRQ handling. An optional feature of PCI MSI called "Multiple Message" allows a device to use multiple consecutive interrupt vectors. A malicious guest can crash the hypervisor.
How to mitigate CVE-2024-31143
Install updates from vendor's website.