| Name | CVE-2017-2620 |
| Description | Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process. |
| 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-1270-1, DLA-1497-1, DLA-842-1, DLA-845-1 |
| Debian Bugs | 855791 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| qemu (PTS) | buster | 1:3.1+dfsg-8+deb10u8 | fixed |
| buster (security) | 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+deb12u5 | fixed | |
| trixie | 1:8.2.1+ds-2 | fixed | |
| sid | 1:8.2.2+ds-2 | fixed | |
| xen (PTS) | buster, buster (security) | 4.11.4+107-gef32c7afa2-1 | fixed |
| bullseye | 4.14.6-1 | fixed | |
| bullseye (security) | 4.14.5+94-ge49571868d-1 | fixed | |
| bookworm | 4.17.3+10-g091466ba55-1~deb12u1 | fixed | |
| trixie | 4.17.3+10-g091466ba55-1 | fixed | |
| sid | 4.17.3+36-g54dacb5c02-1 | 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 | 1.1.2+dfsg-6+deb7u20 | DLA-845-1 | ||
| qemu | source | jessie | 1:2.1+dfsg-12+deb8u7 | DLA-1497-1 | ||
| qemu | source | (unstable) | 1:2.8+dfsg-3 | 855791 | ||
| qemu-kvm | source | wheezy | 1.1.2+dfsg-6+deb7u20 | DLA-842-1 | ||
| qemu-kvm | source | (unstable) | (unfixed) | |||
| xen | source | wheezy | 4.1.6.lts1-12 | DLA-1270-1 | ||
| xen | source | (unstable) | 4.4.0-1 |
Xen switched to qemu-system in 4.4.0-1
https://xenbits.xen.org/xsa/advisory-209.html
Qemu upstream patch: https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04700.html