cve-2021-3527
Vulnerability from cvelistv5
Published
2021-05-26 21:13
Modified
2024-08-03 17:01
Severity ?
EPSS score ?
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 |
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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.
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- 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.