Vulnerabilities > CVE-2021-4158 - NULL Pointer Dereference vulnerability in multiple products
Attack vector
LOCAL Attack complexity
LOW Privileges required
HIGH Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 22 | |
| OS | 1 |
Common Weakness Enumeration (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2035002
- https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827e
- https://access.redhat.com/security/cve/CVE-2021-4158
- https://gitlab.com/qemu-project/qemu/-/issues/770
- https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.html