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CVE-2021-3682

nvd nist
Published: Aug 5, 2021Modified: Nov 21, 2024

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8.5
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 6.0
Source: NVD

Description

A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.

Affected (7)

Qemu
1 product
Qemu
Redhat
1 product
Enterprise Linux
Debian
1 product
Debian Linux
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Qemu
Qemu
Before 6.1.0
Qemu
Version 6.1.0 rc1
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Redhat
Enterprise Linux
Version 8.0
Enterprise Linux
Version 8.0
Configuration C
3 vulnerable
Vulnerable SoftwareAffected Versions
Debian
Debian Linux
Version 10.0
Debian Linux
Version 11.0
Debian Linux
Version 9.0

Related CWEs

CWE-763
Release of Invalid Pointer or Reference
The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.

References (12)

Source: secalert@redhat.com
Issue TrackingPatchThird Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Mailing ListThird Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingPatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.