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CVE details

CVE-2023-5088

A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.

Score
6.4 medium
Published
2023-11-03
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>8.2.0</lt></range>
      </package>
      <package>
	<name>qemu-user-static</name>
	<range><lt>8.2.0</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>A bug in QEMU could cause a guest I/O operation otherwise addressed to
	an arbitrary disk offset to be targeted to offset 0 instead
	(potentially overwriting the VM's boot code). This could be used, for
	example, by L2 guests with a virtual disk (vdiskL2) stored on a
	virtual disk of an L1 (vdiskL1) hypervisor to read and/or write data
	to LBA 0 of vdiskL1, potentially gaining control of L1 at its next
	reboot.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2023-5088</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2023-5088</url>
    </references>
    <dates>
      <discovery>2023-11-03</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>