CVE-2021-4158

EPSS 0.4%CWE-476

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

24 Aug 2022Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.

Affected products

n/a · QEMU

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References

https://access.redhat.com/security/cve/CVE-2021-4158 https://bugzilla.redhat.com/show_bug.cgi?id=2035002 https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827e https://gitlab.com/qemu-project/qemu/-/issues/770 https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.html