Resource exhaustion in Xen - CVE-2022-26360
Published: May 19, 2022
Vulnerability identifier: #VU63441
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/U:Clear
CVE-ID: CVE-2022-26360
CWE-ID: CWE-400
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Xen Project
Affected software:
Xen
Xen
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to RMRR (VT-d) and unity map (AMD-Vi) handling issues. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.
How to mitigate CVE-2022-26360
Install updates from vendor's website.
Sources
- https://xenbits.xenproject.org/xsa/advisory-400.txt
- http://xenbits.xen.org/xsa/advisory-400.html
- http://www.openwall.com/lists/oss-security/2022/04/05/3
- https://www.debian.org/security/2022/dsa-5117
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/