Integer Overflow and Buffer Overflow in QEMU ACPI Device
CVE-2022-4172

6.5MEDIUM

Key Information:

Vendor

Qemu
Status
Qemu (acpi Erst)
Vendor
CVE Published:
29 November 2022

What is CVE-2022-4172?

An integer overflow and buffer overflow vulnerability exists in the ACPI Error Record Serialization Table (ERST) device of QEMU. This flaw is present in the read_erst_record() and write_erst_record() functions and may allow a malicious guest to overrun the host buffer allocated for the ERST memory device. Exploitation of this vulnerability could lead to a crash of the QEMU process on the host, potentially impacting the stability of virtualized environments.

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Affected Version(s)

QEMU (ACPI ERST) Affected: 7.0.0, Fixed: 7.2.0-rc0

References

https://lore.kernel.org/qemu-devel/20221024154233.1043347...
https://gitlab.com/qemu-project/qemu/-/issues/1268
https://gitlab.com/qemu-project/qemu/-/commit/defb7098

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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