Use-After-Free Vulnerability in QEMU's LSI53C895A SCSI Host Bus Adapter
CVE-2022-0216

4.4MEDIUM

Key Information:

Vendor

Qemu
Status
Qemu
Vendor
CVE Published:
26 August 2022

What is CVE-2022-0216?

A use-after-free vulnerability exists in the LSI53C895A SCSI Host Bus Adapter emulation within QEMU. This issue manifests when handling repeated cancellation messages for ongoing SCSI requests through the lsi_do_msgout function. A malicious privileged user operating within a guest environment could exploit this flaw to crash the QEMU process on the host system, thereby causing a denial of service.

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Affected Version(s)

QEMU Affects QEMU < v6.0.0, Fixed in v7.1.0-rc0

References

https://starlabs.sg/advisories/22/22-0216/
https://bugzilla.redhat.com/show_bug.cgi?id=2036953
https://gitlab.com/qemu-project/qemu/-/issues/972

CVSS V3.1

Score:
4.4
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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