CVE - CVE-2021-3527

CVE-ID
CVE-2021-3527	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
A flaw was found in the USB redirector device (usb-redir) of QEMU. Small USB packets are combined into a single, large transfer request, to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded, a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack, resulting in a denial of service.
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:GLSA-202208-27 URL:https://security.gentoo.org/glsa/202208-27 MISC:[debian-lts-announce] 20210902 [SECURITY] [DLA 2753-1] qemu security update URL:https://lists.debian.org/debian-lts-announce/2021/09/msg00000.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:https://bugzilla.redhat.com/show_bug.cgi?id=1955695 URL:https://bugzilla.redhat.com/show_bug.cgi?id=1955695 MISC:https://gitlab.com/qemu-project/qemu/-/commit/05a40b172e4d691371534828078be47e7fff524c URL:https://gitlab.com/qemu-project/qemu/-/commit/05a40b172e4d691371534828078be47e7fff524c MISC:https://gitlab.com/qemu-project/qemu/-/commit/7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986 URL:https://gitlab.com/qemu-project/qemu/-/commit/7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986 MISC:https://security.netapp.com/advisory/ntap-20210708-0008/ URL:https://security.netapp.com/advisory/ntap-20210708-0008/ MISC:https://www.openwall.com/lists/oss-security/2021/05/05/5 URL:https://www.openwall.com/lists/oss-security/2021/05/05/5
Assigning CNA
Red Hat, Inc.
Date Record Created
20210430	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 (20210430)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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