CVE-2023-5088

Name	CVE-2023-5088
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3759-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
qemu (PTS)	bullseye	1:5.2+dfsg-11+deb11u3	vulnerable
	bullseye (security)	1:5.2+dfsg-11+deb11u2	vulnerable
	bookworm	1:7.2+dfsg-7+deb12u7	fixed
	sid, trixie	1:9.1.1+ds-5	fixed

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

Package	Type	Release	Fixed Version	Origin
qemu	source	buster	1:3.1+dfsg-8+deb10u12	DLA-3759-1
qemu	source	bookworm	1:7.2+dfsg-7+deb12u3
qemu	source	(unstable)	1:8.1.1+ds-2

Notes

[bullseye] - qemu <no-dsa> (Minor issue)
https://bugzilla.redhat.com/show_bug.cgi?id=2247283
Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/471a9310fd92b3e1a33d06dba2e0cf0f0b5590e0 (v7.2.7)
Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/7d7512019fc40c577e2bdd61f114f31a9eb84a8e (v8.2.0-rc0)