| Name | CVE-2014-7840 |
| Description | The host_from_stream_offset function in arch_init.c in QEMU, when loading RAM during migration, allows remote attackers to execute arbitrary code via a crafted (1) offset or (2) length value in savevm data. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| NVD severity | high (attack range: remote) |
| Debian Bugs | 769451 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| qemu (PTS) | wheezy | 1.1.2+dfsg-6a+deb7u12 | vulnerable |
| wheezy (security) | 1.1.2+dfsg-6+deb7u25 | vulnerable |
| jessie (security), jessie | 1:2.1+dfsg-12+deb8u6 | fixed |
| stretch (security), stretch | 1:2.8+dfsg-6+deb9u3 | fixed |
| buster, sid | 1:2.12+dfsg-1 | fixed |
| qemu-kvm (PTS) | wheezy | 1.1.2+dfsg-6+deb7u12 | vulnerable |
| wheezy (security) | 1.1.2+dfsg-6+deb7u25 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| qemu | source | (unstable) | 2.1+dfsg-8 | low | | 769451 |
| qemu-kvm | source | (unstable) | (unfixed) | low | | |
Notes
[wheezy] - qemu <no-dsa> (Minor issue, hardly exploitable in practice)
[squeeze] - qemu <no-dsa> (Minor issue, hardly exploitable in practice)
[wheezy] - qemu-kvm <no-dsa> (Minor issue, hardly exploitable in practice)
[squeeze] - qemu-kvm <no-dsa> (Minor issue, hardly exploitable in practice)
http://thread.gmane.org/gmane.comp.emulators.qemu/306117