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CVE details

CVE-2022-4144

An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition.

Score
6.5 medium
Published
2022-11-29
Links
NVD · cve.org

Affected ports (2)

PortPackageVersionStatusMaintainer
emulators/qemu-cheriqemu-cheri0.d20260108unaddressedbrooks@FreeBSD.org
emulators/qemu-user-staticqemu-user-static3.1.0_16unaddressedemulation@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>FIXME</lt></range>
      </package>
      <package>
	<name>qemu-user-static</name>
	<range><lt>FIXME</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>An out-of-bounds read flaw was found in the QXL display device
	emulation in QEMU. The qxl_phys2virt() function does not check the
	size of the structure pointed to by the guest physical address,
	potentially reading past the end of the bar space into adjacent pages.
	A malicious guest user could use this flaw to crash the QEMU process
	on the host causing a denial of service condition.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2022-4144</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2022-4144</url>
    </references>
    <dates>
      <discovery>2022-11-29</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>