Vulnerability · Published Dec 8, 2023 · Assigned by XEN
CVE-2023-34320arm: Guests can trigger a deadlock on Cortex-A77
Medium 5.5
In plain English
A medium-severity security flaw in Xen from Xen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 85.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Cortex-A77 cores (r0p0 and r1p0) are affected by erratum 1508412 where software, under certain circumstances, could deadlock a core due to the execution of either a load to device or non-cacheable memory, and either a store exclusive or register read of the Physical Address Register (PAR_EL1) in close proximity.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | xen | 4.17.1-r5 | ALPINE-CVE-2023-34320 |
| Alpine:v3.21 | xen | 4.17.1-r5 | ALPINE-CVE-2023-34320 |
| Alpine:v3.22 | xen | 4.17.1-r5 | ALPINE-CVE-2023-34320 |
| Alpine:v3.23 | xen | 4.17.1-r5 | ALPINE-CVE-2023-34320 |
| Alpine:v3.24 | xen | 4.17.1-r5 | ALPINE-CVE-2023-34320 |
| Debian:12 | xen | 4.17.2+76-ge1f9cb16e2-1~deb12u1 | DEBIAN-CVE-2023-34320 |
| Debian:13 | xen | 4.17.2-1 | DEBIAN-CVE-2023-34320 |
| Debian:14 | xen | 4.17.2-1 | DEBIAN-CVE-2023-34320 |
| Ubuntu:22.04:LTS | xen | no fix listed | UBUNTU-CVE-2023-34320 |
| Ubuntu:24.04:LTS | xen | no fix listed | UBUNTU-CVE-2023-34320 |
| Ubuntu:25.10 | xen | no fix listed | UBUNTU-CVE-2023-34320 |
| Ubuntu:26.04:LTS | xen | no fix listed | UBUNTU-CVE-2023-34320 |
| Ubuntu:26.10 | xen | no fix listed | UBUNTU-CVE-2023-34320 |