| 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, ELA-1063-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| qemu (PTS) | jessie, jessie (lts) | 1:2.1+dfsg-12+deb8u23 | vulnerable |
| stretch (security) | 1:2.8+dfsg-6+deb9u17 | vulnerable |
| stretch (lts), stretch | 1:2.8+dfsg-6+deb9u19 | fixed |
| buster (security), buster, buster (lts) | 1:3.1+dfsg-8+deb10u12 | fixed |
| 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 | 1:9.2.0+ds-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| qemu | source | jessie | (unfixed) | end-of-life | | |
| qemu | source | stretch | 1:2.8+dfsg-6+deb9u19 | | ELA-1063-1 | |
| 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)