CVE details
CVE-2020-14364
An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.
Affected ports (2)
| Port | Package | Version | Status | Maintainer |
|---|---|---|---|---|
| emulators/qemu-cheri | qemu-cheri | 0.d20260108 | unaddressed | brooks@FreeBSD.org |
| emulators/qemu-user-static | qemu-user-static | 3.1.0_16 | unaddressed | emulation@FreeBSD.org |
Template for a VuXML entry
Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.
<vuln vid="FIXME (make newentry)">
<topic>FIXME -- FIXME</topic>
<affects>
<package>
<name>qemu-cheri</name>
<range><lt>5.2.0</lt></range>
</package>
<package>
<name>qemu-user-static</name>
<range><lt>5.2.0</lt></range>
</package>
</affects>
<description>
<body xmlns="http://www.w3.org/1999/xhtml">
<p>An out-of-bounds read/write access flaw was found in the USB emulator
of the QEMU in versions before 5.2.0. This issue occurs while
processing USB packets from a guest when USBDevice 'setup_len' exceeds
its 'data_buf[4096]' in the do_token_in, do_token_out routines. This
flaw allows a guest user to crash the QEMU process, resulting in a
denial of service, or the potential execution of arbitrary code with
the privileges of the QEMU process on the host.</p>
</body>
</description>
<references>
<cvename>CVE-2020-14364</cvename>
<url>https://nvd.nist.gov/vuln/detail/CVE-2020-14364</url>
</references>
<dates>
<discovery>2020-08-31</discovery>
<entry>2026-10-25</entry>
</dates>
</vuln>