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CVE details

CVE-2021-3582

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. The issue occurs while handling a "PVRDMA_CMD_CREATE_MR" command due to improper memory remapping (mremap). This flaw allows a malicious guest to crash the QEMU process on the host. The highest threat from this vulnerability is to system availability.

Score
6.5 medium
Published
2022-03-25
Links
NVD · cve.org

Affected ports (1)

PortPackageVersionStatusMaintainer
emulators/qemu-cheriqemu-cheri0.d20260108unaddressedbrooks@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>2.17.2</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>A flaw was found in the QEMU implementation of VMWare's paravirtual
	RDMA device. The issue occurs while handling a "PVRDMA_CMD_CREATE_MR"
	command due to improper memory remapping (mremap). This flaw allows a
	malicious guest to crash the QEMU process on the host. The highest
	threat from this vulnerability is to system availability.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2021-3582</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2021-3582</url>
    </references>
    <dates>
      <discovery>2022-03-25</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>