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
Link | Resource |
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https://bugzilla.redhat.com/show_bug.cgi?id=1955695 | Issue Tracking Patch Third Party Advisory |
https://gitlab.com/qemu-project/qemu/-/commit/05a40b172e4d691371534828078be47e7fff524c | Patch Third Party Advisory |
https://gitlab.com/qemu-project/qemu/-/commit/7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986 | Patch Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html | Mailing List Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html | Mailing List Third Party Advisory |
https://security.gentoo.org/glsa/202208-27 | Third Party Advisory |
https://security.netapp.com/advisory/ntap-20210708-0008/ | Third Party Advisory |
https://www.openwall.com/lists/oss-security/2021/05/05/5 | Mailing List Patch Third Party Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Configuration 3 (hide)
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History
05 Sep 2022, 06:15
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References |
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15 Aug 2022, 11:15
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References |
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21 Sep 2021, 18:05
Type | Values Removed | Values Added |
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References | (CONFIRM) https://security.netapp.com/advisory/ntap-20210708-0008/ - Third Party Advisory | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html - Mailing List, Third Party Advisory | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
02 Sep 2021, 21:15
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References |
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03 Jun 2021, 13:57
Type | Values Removed | Values Added |
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References | (MISC) https://gitlab.com/qemu-project/qemu/-/commit/7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986 - Patch, Third Party Advisory | |
References | (MISC) https://gitlab.com/qemu-project/qemu/-/commit/05a40b172e4d691371534828078be47e7fff524c - Patch, Third Party Advisory | |
References | (MISC) https://www.openwall.com/lists/oss-security/2021/05/05/5 - Mailing List, Patch, Third Party Advisory | |
References | (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1955695 - Issue Tracking, Patch, Third Party Advisory | |
CPE | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:* cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* |
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CVSS |
v2 : v3 : |
v2 : 2.1
v3 : 5.5 |
27 May 2021, 02:11
Type | Values Removed | Values Added |
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CWE | CWE-770 |
26 May 2021, 22:15
Type | Values Removed | Values Added |
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New CVE |
Information
Published : 2021-05-26 22:15
Updated : 2024-02-04 21:47
NVD link : CVE-2021-3527
Mitre link : CVE-2021-3527
CVE.ORG link : CVE-2021-3527
JSON object : View
Products Affected
redhat
- enterprise_linux
qemu
- qemu
debian
- debian_linux
CWE
CWE-770
Allocation of Resources Without Limits or Throttling