Out-of-bounds Read Affecting qemu package, versions <1:5.2+dfsg-4
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Test your applications- Snyk ID SNYK-DEBIAN11-QEMU-1070317
- published 5 Feb 2021
- disclosed 13 May 2021
How to fix?
Upgrade Debian:11
qemu
to version 1:5.2+dfsg-4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu
package and not the qemu
package as distributed by Debian
.
See How to fix?
for Debian:11
relevant fixed versions and status.
An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU up to and including qemu 4.2.0on aarch64 platform. The issue occurs because while writing an interrupt ID to the controller memory area, it is not masked to be 4 bits wide. It may lead to the said issue while updating controller state fields and their subsequent processing. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.
References
- https://security-tracker.debian.org/tracker/CVE-2021-20221
- https://bugzilla.redhat.com/show_bug.cgi?id=1924601
- https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html
- http://www.openwall.com/lists/oss-security/2021/02/05/1
- https://security.netapp.com/advisory/ntap-20210708-0005/
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
- https://access.redhat.com/errata/RHSA-2021:1125
- https://access.redhat.com/errata/RHSA-2021:2521
- https://access.redhat.com/errata/RHSA-2021:3061
- https://access.redhat.com/security/cve/CVE-2021-20221
- https://bugs.launchpad.net/qemu/+bug/1914353
- https://www.openwall.com/lists/oss-security/2021/02/05/1