| Name | CVE-2022-2526 |
| Description | A use-after-free vulnerability was found in systemd. This issue occurs due to the on_stream_io() function and dns_stream_complete() function in 'resolved-dns-stream.c' not incrementing the reference counting for the DnsStream object. Therefore, other functions and callbacks called can dereference the DNSStream object, causing the use-after-free when the reference is still used later. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | ELA-675-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| systemd (PTS) | jessie, jessie (lts) | 215-17+deb8u15 | fixed |
| stretch (security) | 232-25+deb9u14 | vulnerable | |
| stretch (lts), stretch | 232-25+deb9u16 | fixed | |
| buster | 241-7~deb10u8 | fixed | |
| buster (security) | 241-7~deb10u10 | fixed | |
| bullseye | 247.3-7+deb11u4 | fixed | |
| bookworm | 252.22-1~deb12u1 | fixed | |
| sid, trixie | 255.4-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| systemd | source | jessie | (not affected) | |||
| systemd | source | stretch | 232-25+deb9u15 | ELA-675-1 | ||
| systemd | source | (unstable) | 240-1 |
https://bugzilla.redhat.com/show_bug.cgi?id=2109926
https://github.com/systemd/systemd/commit/d973d94dec349fb676fdd844f6fe2ada3538f27c (v240)
[jessie] - systemd <not-affected> (Vulnerable code not present)