| Name | CVE-2023-2861 |
| Description | A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder. |
| 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 | 1:9.1.1+ds-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| 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+deb12u1 | | | |
| qemu | source | (unstable) | 1:8.0.3+dfsg-1 | | | |
Notes
[bullseye] - qemu <ignored> (Minor issue)
https://gitlab.com/qemu-project/qemu/-/commit/f6b0de53fb87ddefed348a39284c8e2f28dc4eda
[jessie] - qemu <postponed> (Minor issue)