CVE - CVE-2021-20221

CVE-ID
CVE-2021-20221	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:[debian-lts-announce] 20210218 [SECURITY] [DLA 2560-1] qemu security update URL:https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html MISC:[debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update URL:https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html MISC:[oss-security] 20210205 CVE-2021-20221 QEMU: aarch64: GIC: out-of-bound heap buffer access via an interrupt ID field URL:http://www.openwall.com/lists/oss-security/2021/02/05/1 MISC:https://bugzilla.redhat.com/show_bug.cgi?id=1924601 URL:https://bugzilla.redhat.com/show_bug.cgi?id=1924601 MISC:https://security.netapp.com/advisory/ntap-20210708-0005/ URL:https://security.netapp.com/advisory/ntap-20210708-0005/
Assigning CNA
Red Hat, Inc.
Date Record Created
20201217	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20201217)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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