Buffer overflow in Qemu
CVE-2022-4172
An integer overflow and buffer overflow issues were found in the ACPI Error Record Serialization Table (ERST) device of QEMU in the read_erst_record() and write_erst_record() functions. Both issues may allow the guest to overrun the host buffer allocated for the ERST memory device. A malicious guest could use these flaws to crash the QEMU process on the host.
Vulnerability class: Buffer Overflow
EPSS: 0.004 (30.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Qemu — versions 7.0.0
- Fedoraproject Fedora — versions 37
- N/a Qemu (Acpi Erst) — versions Affected: 7.0.0, Fixed: 7.2.0-rc0
Weakness classification (CWE)
References
- secalert@redhat.com
- secalert@redhat.com (Exploit, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Patch, Third Party Advisory)
- secalert@redhat.com (vendor-advisory)
- secalert@redhat.com (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-4172?
- CVE-2022-4172 is a medium-severity vulnerability in Qemu, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.5/10. Published 2022-11-29.
- How severe is CVE-2022-4172?
- Medium severity. CVSS v3 base score is 6.5 out of 10.