CVE catalog
CVE-2024-36844
libmodbus: CVE-2024-36844
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.61% · Oct 27, 2026
libmodbus v3.1.6 was discovered to contain a use-after-free via the ctx->backend pointer. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted message sent to the unit-test-server.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libmodbus | sid | 3.2.0-1 | fixed |
| Debian | libmodbus | forky | 3.2.0-1 | fixed |
| Debian | libmodbus | trixie | 3.1.11-2 | fixed |
| Debian | libmodbus | bookworm | 3.1.6-2.1 | fixed |
| Debian | libmodbus | bookworm-security | 3.1.6-2.1+deb12u1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libmodbus | source | sid | 3.1.6-2.1 | not yet assigned | Not reported | [1074422] |
| Debian | libmodbus | source | forky | 3.1.6-2.1 | not yet assigned | Not reported | [1074422] |
| Debian | libmodbus | source | trixie | 3.1.6-2.1 | not yet assigned | Not reported | [1074422] |
| Debian | libmodbus | source | bookworm | 3.1.6-2.1 | not yet assigned | Not reported | [1074422] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libmodbus5]Fixed
Source package: [libmodbus]
Details (4)
3.1.6-2.1· amd64 · bookwormFixed · Fixed:
3.1.6-2.1dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
3.1.6-2.1· arm64 · bookwormFixed · Fixed:
3.1.6-2.1dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
3.1.6-2.1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
3.1.6-2.1dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
3.1.6-2.1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
3.1.6-2.1dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
- [libmodbus-dev]Fixed
Source package: [libmodbus]
Details (4)
3.1.6-2.1· amd64 · bookwormFixed · Fixed:
3.1.6-2.1dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
3.1.6-2.1· arm64 · bookwormFixed · Fixed:
3.1.6-2.1dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
3.1.6-2.1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
3.1.6-2.1dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
3.1.6-2.1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
3.1.6-2.1dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
[Debian 13 (Trixie)]
- [libmodbus5]Fixed
Source package: [libmodbus]
Details (2)
3.1.11-2· amd64 · trixieFixed · Fixed:
3.1.6-2.1dsa · libmodbus · debian · 13
3.1.11-2· arm64 · trixieFixed · Fixed:
3.1.6-2.1dsa · libmodbus · debian · 13
- [libmodbus-dev]Fixed
Source package: [libmodbus]
Details (2)
3.1.11-2· amd64 · trixieFixed · Fixed:
3.1.6-2.1dsa · libmodbus · debian · 13
3.1.11-2· arm64 · trixieFixed · Fixed:
3.1.6-2.1dsa · libmodbus · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2024-36844]
- [https://security-tracker.debian.org/tracker/CVE-2024-36844]
- [https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-36844.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]