Deadlock in Xen - CVE-2023-34320
Published: August 7, 2023
Vulnerability identifier: #VU79040
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-34320
CWE-ID: CWE-833
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.
The vulnerability exists due to a coding error in code for Cortex-A77 cores (r0p0 and r1p0). A malicious guest can trigger a deadlock and perform a denial of service (DoS) attack.
Affected software
Xen
Gentoo Linux
Fedora
xen
app-emulation/xen
Gentoo Linux
Fedora
xen
app-emulation/xen
How to mitigate CVE-2023-34320
Install updates from vendor's website.
xen - addressed in versions 4.16.4-4.fc37, 4.16.5-1.fc37, 4.17.1-9.fc38
app-emulation/xen - update to 4.17.4
app-emulation/xen - update to 4.17.4