| Name | CVE-2016-9923 |
| Description | Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur while hotplug and unplugging the device in the guest. A guest user/process could use this flaw to crash a Qemu process on the host resulting in DoS. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 847957 |
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 | fixed |
| 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 | fixed |
| bullseye (security) | 1:5.2+dfsg-11+deb11u2 | fixed |
| 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 | (unstable) | 1:2.8+dfsg-1 | | | 847957 |
| qemu-kvm | source | (unstable) | (unfixed) | | | |
Notes
[jessie] - qemu <ignored> (Minor issue; too complex to backport)
[wheezy] - qemu <no-dsa> (Minor issue)
[wheezy] - qemu-kvm <no-dsa> (Minor issue)
https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg05597.html
Fixed by: http://git.qemu.org/?p=qemu.git;a=commit;h=a4afa548fc6dd9842ed86639b4d37d4d1c4ad480 (v2.8.0-rc0)