| 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) | buster | 0.16.105-1+deb10u1 | vulnerable |
| buster (security) | 1.0.225-1.1~deb10u1 | vulnerable |
| bullseye | 1.0.225-1.1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libyang | source | (unstable) | (unfixed) | | | 989060 |
Notes
[bullseye] - libyang <no-dsa> (Minor issue)
[buster] - libyang <no-dsa> (Minor issue)
https://github.com/CESNET/libyang/issues/1453