| Name | CVE-2026-8836 |
| Description | A vulnerability was found in lwIP up to 2.2.1. Affected is the function snmp_parse_inbound_frame of the file src/apps/snmp/snmp_msg.c of the component snmpv3 USM Handler. Performing a manipulation of the argument msgAuthenticationParameters results in stack-based buffer overflow. The attack may be initiated remotely. The patch is named 0c957ec03054eb6c8205e9c9d1d05d90ada3898c. It is suggested to install a patch to address this issue. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1137526 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| lwip (PTS) | bullseye | 2.1.2+dfsg1-8+deb11u1 | vulnerable |
| bookworm | 2.1.3+dfsg1-2 | vulnerable |
| trixie | 2.2.1+dfsg1-1 | vulnerable |
| forky, sid | 2.2.1+dfsg1-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| lwip | source | (unstable) | 2.2.1+dfsg1-5 | | | 1137526 |
Notes
[trixie] - lwip <no-dsa> (Minor issue)
[bookworm] - lwip <no-dsa> (Minor issue)
[bullseye] - lwip <postponed> (Minor issue)
https://savannah.nongnu.org/bugs/?68194
https://cgit.git.savannah.gnu.org/cgit/lwip.git/commit/?id=0c957ec03054eb6c8205e9c9d1d05d90ada3898c