| Name | CVE-2021-28903 |
| Description | A stack overflow in libyang <= v1.0.225 can cause a denial of service through function lyxml_parse_mem(). lyxml_parse_elem() function will be called recursively, which will consume stack space and lead to crash. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 989060 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libyang (PTS) | bullseye | 1.0.225-1.1 | vulnerable |
| sid, trixie | 3.4.2+dfsg-2 | fixed |
| libyang2 (PTS) | bookworm | 2.1.30-2 | fixed |
| sid, trixie | 2.1.148-0.2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libyang | source | (unstable) | 3.4.2+dfsg-2 | | | 989060 |
| libyang2 | source | (unstable) | (not affected) | | | |
Notes
- libyang2 <not-affected> (Fixed before initial upload)
[bullseye] - libyang <no-dsa> (Minor issue)
[buster] - libyang <no-dsa> (Minor issue)
https://github.com/CESNET/libyang/issues/1453
https://github.com/CESNET/libyang/commit/298b30ea4ebee137226acf9bb38678bd82704582 (v1.0.240)
src:libyang was removed and later re-introduced as src:libyang with version 3