CVE details
CVE-2021-3607
An integer overflow was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest due to improper input validation. This flaw allows a privileged guest user to make QEMU allocate a large amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
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>6.1.0</lt></range>
</package>
<package>
<name>qemu-user-static</name>
<range><lt>6.1.0</lt></range>
</package>
</affects>
<description>
<body xmlns="http://www.w3.org/1999/xhtml">
<p>An integer overflow was found in the QEMU implementation of VMWare's
paravirtual RDMA device in versions prior to 6.1.0. The issue occurs
while handling a "PVRDMA_REG_DSRHIGH" write from the guest due to
improper input validation. This flaw allows a privileged guest user to
make QEMU allocate a large amount of memory, resulting in a denial of
service. The highest threat from this vulnerability is to system
availability.</p>
</body>
</description>
<references>
<cvename>CVE-2021-3607</cvename>
<url>https://nvd.nist.gov/vuln/detail/CVE-2021-3607</url>
</references>
<dates>
<discovery>2022-02-24</discovery>
<entry>2026-10-25</entry>
</dates>
</vuln>