# CVE-2018-18225: libwireshark11: In Wireshark 2.6.0 to 2.6.3, the CoAP dissector could crash

CVE-2018-18225 is fixed in 10 products on 1 platform, first by libwireshark-data 2.6.4-2~ubuntu18.04.0, released October 11, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-18225
- Priority: Routine
- CVSS: n/a (Low)
- EPSS: 0.0288
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 11, 2018

## Description

In Wireshark 2.6.0 to 2.6.3, the CoAP dissector could crash. This was addressed in epan/dissectors/packet-coap.c by ensuring that the piv length is correctly computed.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libwireshark-data Ubuntu 18.04.6 LTS (bionic) | 2.6.4-2~ubuntu18.04.0 | [libwireshark-data 2.6.4-2~ubuntu18.04.0](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwireshark-data-2.6.4-2-ubuntu18.04.0.md) | Oct 11, 2018 |
| Linux | libwireshark11 Ubuntu 18.04.6 LTS (bionic) | 2.6.4-2~ubuntu18.04.0 | [libwireshark11 2.6.4-2~ubuntu18.04.0](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwireshark11-2.6.4-2-ubuntu18.04.0.md) | Oct 11, 2018 |
| Linux | libwiretap8 Ubuntu 18.04.6 LTS (bionic) | 2.6.4-2~ubuntu18.04.0 | [libwiretap8 2.6.4-2~ubuntu18.04.0](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwiretap8-2.6.4-2-ubuntu18.04.0.md) | Oct 11, 2018 |
| Linux | libwscodecs2 Ubuntu 18.04.6 LTS (bionic) | 2.6.4-2~ubuntu18.04.0 | [libwscodecs2 2.6.4-2~ubuntu18.04.0](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwscodecs2-2.6.4-2-ubuntu18.04.0.md) | Oct 11, 2018 |
| Linux | libwsutil9 Ubuntu 18.04.6 LTS (bionic) | 2.6.4-2~ubuntu18.04.0 | [libwsutil9 2.6.4-2~ubuntu18.04.0](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwsutil9-2.6.4-2-ubuntu18.04.0.md) | Oct 11, 2018 |
| Linux | tshark Ubuntu 18.04.6 LTS (bionic) | 2.6.4-2~ubuntu18.04.0 | [tshark 2.6.4-2~ubuntu18.04.0](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-tshark-2.6.4-2-ubuntu18.04.0.md) | Oct 11, 2018 |
| Linux | wireshark Ubuntu 18.04.6 LTS (bionic) | 2.6.4-2~ubuntu18.04.0 | [wireshark 2.6.4-2~ubuntu18.04.0](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-wireshark-2.6.4-2-ubuntu18.04.0.md) | Oct 11, 2018 |
| Linux | wireshark-common Ubuntu 18.04.6 LTS (bionic) | 2.6.4-2~ubuntu18.04.0 | [wireshark-common 2.6.4-2~ubuntu18.04.0](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-wireshark-common-2.6.4-2-ubuntu18.04.0.md) | Oct 11, 2018 |
| Linux | wireshark-gtk Ubuntu 18.04.6 LTS (bionic) | 2.6.4-2~ubuntu18.04.0 | [wireshark-gtk 2.6.4-2~ubuntu18.04.0](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-wireshark-gtk-2.6.4-2-ubuntu18.04.0.md) | Oct 11, 2018 |
| Linux | wireshark-qt Ubuntu 18.04.6 LTS (bionic) | 2.6.4-2~ubuntu18.04.0 | [wireshark-qt 2.6.4-2~ubuntu18.04.0](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-wireshark-qt-2.6.4-2-ubuntu18.04.0.md) | Oct 11, 2018 |

---

Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.