CVE-2021-20221

Name
CVE-2021-20221
Description
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.
NVD Severity
medium
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MLIST https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html
MISC https://bugzilla.redhat.com/show_bug.cgi?id=1924601
MLIST http://www.openwall.com/lists/oss-security/2021/02/05/1
CONFIRM https://security.netapp.com/advisory/ntap-20210708-0005/

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* qemu >= None <= 4.2.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status