| Name | CVE-2020-1983 |
| Description | A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service. |
| 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-2262-1, DLA-2288-1, DSA-4665-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libslirp (PTS) | bullseye | 4.4.0-1+deb11u2 | fixed |
| sid, trixie, bookworm | 4.7.0-1 | fixed |
| qemu (PTS) | jessie, jessie (lts) | 1:2.1+dfsg-12+deb8u23 | fixed |
| stretch (security) | 1:2.8+dfsg-6+deb9u17 | fixed |
| stretch (lts), stretch | 1:2.8+dfsg-6+deb9u19 | fixed |
| 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 |
| slirp4netns (PTS) | buster | 0.2.3-1 | vulnerable |
| bullseye | 1.0.1-2 | fixed |
| bookworm | 1.2.0-1 | fixed |
| sid, trixie | 1.2.1-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[buster] - slirp4netns <no-dsa> (Minor issue)
https://gitlab.freedesktop.org/slirp/libslirp/-/commit/9bd6c5913271eabcb7768a58197ed3301fe19f2d
qemu 1:4.1-2 switched to system libslirp, marking that version as fixed
slirp4netns 1.0.1-1 switched to system libslirp, marking that version as fixed.
https://github.com/rootless-containers/slirp4netns/security/advisories/GHSA-p3hx-89v2-4r99