NULL Pointer Dereference Affecting qemu-img package, versions <15:6.2.0-11.module+el8.6.0+14707+5aa4b42d
Threat Intelligence
EPSS
0.08% (34th
percentile)
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Test your applications- Snyk ID SNYK-CENTOS8-QEMUIMG-2325327
- published 24 Dec 2021
- disclosed 12 Dec 2021
Introduced: 12 Dec 2021
CVE-2021-4158 Open this link in a new tabHow to fix?
Upgrade Centos:8 qemu-img to version 15:6.2.0-11.module+el8.6.0+14707+5aa4b42d or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu-img package and not the qemu-img package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2021-4158
- https://access.redhat.com/errata/RHSA-2022:1759
- https://bugzilla.redhat.com/show_bug.cgi?id=2035002
- https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827e
- https://www.mail-archive.com/qemu-devel@nongnu.org/msg857944.html
- https://gitlab.com/qemu-project/qemu/-/issues/770
- https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.html
CVSS Scores
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