DescriptionA double free vulnerability was found in QEMU virtio devices (virtio-gpu, virtio-serial-bus, virtio-crypto), where the mem_reentrancy_guard flag insufficiently protects against DMA reentrancy issues. This issue could allow a malicious privileged guest user to crash the QEMU process on the host, resulting in a denial of service or allow arbitrary code execution within the context of the QEMU process on the host.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1068820

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)buster1:3.1+dfsg-8+deb10u8vulnerable
buster (security)1:3.1+dfsg-8+deb10u12vulnerable
bullseye (security)1:5.2+dfsg-11+deb11u2vulnerable
sid, trixie1:8.2.3+ds-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[bookworm] - qemu <no-dsa> (Minor issue)
[bullseye] - qemu <no-dsa> (Minor issue)
[buster] - qemu <no-dsa> (Minor issue) (v9.0.0-rc3) (v9.0.0-rc3) (v9.0.0-rc3) (v8.2.3) (v8.2.3) (v8.2.3)

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