Description
A vulnerability was determined in Kamailio up to 5.5.0/6.0.7. This affects the function get_4bytes of the file src/modules/ims_registrar_scscf/cxdx_avp.c of the component AVP Handler. Executing a manipulation can lead to out-of-bounds read. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. This patch is called abb5d60af6eefbd367bf6588c5589566b090e272. It is advisable to implement a patch to correct this issue. The vendor points out, that "[v]ersion 5.5.0 is old and not maintained anymore."
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Kamailio | 5.0, 5.1, 5.2, 5.3, 5.4, 5.5.0, 6.0.0, 6.0.1, 6.0.2, 6.0.3, 6.0.4, 6.0.5, 6.0.6, 6.0.7 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | kamailio | 6.1.4-1 | — |
| Debian 13 | kamailio | 6.0.1-1+deb13u2 | — |
| Debian 12 | kamailio | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | kamailio | No fix yet | — |
| Ubuntu 26.04 LTS | kamailio | No fix yet | — |
| Ubuntu 24.04 LTS | kamailio | No fix yet | — |
| Ubuntu 22.04 LTS | kamailio | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | kamailio | No fix yet | — |
| Ubuntu Pro 18.04 LTS | kamailio | No fix yet | — |
| Ubuntu Pro 16.04 LTS | kamailio | No fix yet | — |
References
- VDB-397109 | Kamailio AVP cxdx_avp.c get_4bytes out-of-bounds vdb-entry technical-description
- VDB-397109 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-82608 | CVE Analysis and Report third-party-advisory
- Submit #892903 | Kamailio 6.0.7+ Out-of-Bounds Read third-party-advisory
- https://github.com/kamailio/kamailio/issues/4816 exploit issue-tracking
- https://github.com/Kamailio/Kamailio/pull/4823 issue-tracking patch
- https://github.com/Kamailio/Kamailio/commit/abb5d60af6eefbd367bf6588c5589566b090e272 patch
- https://github.com/kamailio/kamailio/ product