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
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Configuration 3 (hide)
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History
21 Nov 2024, 06:21
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=1955695 - Issue Tracking, Patch, Third Party Advisory | |
| References | () https://gitlab.com/qemu-project/qemu/-/commit/05a40b172e4d691371534828078be47e7fff524c - Patch, Third Party Advisory | |
| References | () https://gitlab.com/qemu-project/qemu/-/commit/7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986 - Patch, Third Party Advisory | |
| References | () https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html - Mailing List, Third Party Advisory | |
| References | () https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html - Mailing List, Third Party Advisory | |
| References | () https://security.gentoo.org/glsa/202208-27 - Third Party Advisory | |
| References | () https://security.netapp.com/advisory/ntap-20210708-0008/ - Third Party Advisory | |
| References | () https://www.openwall.com/lists/oss-security/2021/05/05/5 - Mailing List, Patch, Third Party Advisory |
Information
Published : 2021-05-26 22:15
Updated : 2024-11-21 06:21
NVD link : CVE-2021-3527
Mitre link : CVE-2021-3527
CVE.ORG link : CVE-2021-3527
JSON object : View
Products Affected
qemu
- qemu
debian
- debian_linux
redhat
- enterprise_linux
CWE
CWE-770
Allocation of Resources Without Limits or Throttling