NULL pointer dereference in Qemu
CVE-2021-4158
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.
EPSS: 0.004 (30.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Qemu
- Redhat Enterprise_linux — versions 9.0
- N/a Qemu — versions Affects v6.0.0 and above.
Weakness classification (CWE)
References
- secalert@redhat.com (Exploit, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-4158?
- CVE-2021-4158 is a medium-severity vulnerability in Qemu, classified under NULL Pointer Dereference. CVSS score: 6.0/10. Published 2022-08-24.
- How severe is CVE-2021-4158?
- Medium severity. CVSS v3 base score is 6.0 out of 10.