cvelistv5 - cve-2021-3527

cve-2021-3527

Vulnerability from cvelistv5

Published

2021-05-26 21:13

Modified

2024-08-03 17:01

Severity ?

Summary

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

URL	Tags
secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=1955695	Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com	https://gitlab.com/qemu-project/qemu/-/commit/05a40b172e4d691371534828078be47e7fff524c	Patch, Third Party Advisory
secalert@redhat.com	https://gitlab.com/qemu-project/qemu/-/commit/7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986	Patch, Third Party Advisory
secalert@redhat.com	https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html	Mailing List, Third Party Advisory
secalert@redhat.com	https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html	Mailing List, Third Party Advisory
secalert@redhat.com	https://security.gentoo.org/glsa/202208-27	Third Party Advisory
secalert@redhat.com	https://security.netapp.com/advisory/ntap-20210708-0008/	Third Party Advisory
secalert@redhat.com	https://www.openwall.com/lists/oss-security/2021/05/05/5	Mailing List, Patch, Third Party Advisory

Impacted products

▼	Vendor	Product
	n/a	QEMU

Show details on NVD website

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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

cve-2021-3527

Vulnerability from cvelistv5

ghsa-fwv2-775h-qv4v

Vulnerability from github

wid-sec-w-2022-1108

Vulnerability from csaf_certbund

gsd-2021-3527

Vulnerability from gsd

Tags

Sightings

Nomenclature