Use After Free in Qemu
CVE-2022-0216
A use-after-free vulnerability was found in the LSI53C895A SCSI Host Bus Adapter emulation of QEMU. The flaw occurs while processing repeated messages to cancel the current SCSI request via the lsi_do_msgout function. This flaw allows a malicious privileged user within the guest to crash the QEMU process on the host, resulting in a denial of service.
Vulnerability class: Use-After-Free
EPSS: 0.004 (33.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Qemu
- Fedoraproject Fedora — versions 37
- N/a Qemu — versions Affects QEMU < v6.0.0, Fixed in v7.1.0-rc0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Exploit, Third Party Advisory)
- secalert@redhat.com (Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Exploit, Third Party Advisory)
- secalert@redhat.com (Patch, Third Party Advisory)
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (vendor-advisory)
Frequently asked questions
- What is CVE-2022-0216?
- CVE-2022-0216 is a medium-severity vulnerability in Qemu, classified under Use After Free. CVSS score: 4.4/10. Published 2022-08-26.
- How severe is CVE-2022-0216?
- Medium severity. CVSS v3 base score is 4.4 out of 10.
- Is CVE-2022-0216 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.