VulnerabilityModified
CVE-2021-4158
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.
MEDIUM 6.0EPSS 0.40%
Does this matter?
Lower severity and a low EPSS score (0.40%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.0 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 0.40% probability · 33th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- qemu/qemu · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- https://access.redhat.com/security/cve/CVE-2021-4158Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2035002Issue Tracking, Patch, Third Party Advisory
- https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827ePatch, Third Party Advisory
- https://gitlab.com/qemu-project/qemu/-/issues/770Exploit, Third Party Advisory
- https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.htmlPatch, Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2021-4158Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2035002Issue Tracking, Patch, Third Party Advisory
- https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827ePatch, Third Party Advisory
- https://gitlab.com/qemu-project/qemu/-/issues/770Exploit, Third Party Advisory
- https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.htmlPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.