| Name | CVE-2016-6835 |
| Description | The vmxnet_tx_pkt_parse_headers function in hw/net/vmxnet_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (buffer over-read) by leveraging failure to check IP header length. |
| 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-1497-1 |
| Debian Bugs | 835031 |
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 | fixed |
| bullseye (security) | 1:5.2+dfsg-11+deb11u2 | fixed |
| 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 | wheezy | (not affected) | | | |
| qemu | source | jessie | 1:2.1+dfsg-12+deb8u7 | | DLA-1497-1 | |
| qemu | source | (unstable) | 1:2.6+dfsg-3.1 | | | 835031 |
| qemu-kvm | source | wheezy | (not affected) | | | |
| qemu-kvm | source | (unstable) | (unfixed) | | | |
Notes
[wheezy] - qemu <not-affected> (Vulnerable code not present, vmxnet3 introduced in 1.5)
[wheezy] - qemu-kvm <not-affected> (Vulnerable code not present, vmxnet3 introduced in 1.5)
Upstream patch: https://lists.gnu.org/archive/html/qemu-stable/2016-08/msg00077.html
https://www.openwall.com/lists/oss-security/2016/08/11/7