CVE-2021-20221
- State
- Published
- Severity
- Not scored
- Published
- May 13, 2021
- Updated
- Aug 3, 2024
- Reserved
- Dec 17, 2020
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.
Scores
The record has no CVSS score.
Weaknesses
- CWE-125 >CWE-787
Affected Products
| Product | Versions |
|---|---|
qemun/a |
|
References
- [oss-security] 20210205 CVE-2021-20221 QEMU: aarch64: GIC: out-of-bound heap buffer access via an interrupt ID fieldmailing-list
- [debian-lts-announce] 20210218 [SECURITY] [DLA 2560-1] qemu security updatemailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=1924601
- https://security.netapp.com/advisory/ntap-20210708-0005/
- [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security updatemailing-list
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