# CVE-2020-13988: iscsiuio: An issue was discovered in Contiki through 3.0

CVE-2020-13988 is fixed in 2 products on 1 platform, first by iscsiuio 2.0.874-5ubuntu2.11+esm1, released November 30, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-13988
- Priority: Routine
- CVSS: n/a (Low)
- EPSS: 0.0396
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 30, 2020

## Description

An issue was discovered in Contiki through 3.0. An Integer Overflow exists in the uIP TCP/IP Stack component when parsing TCP MSS options of IPv4 network packets in uip_process in net/ipv4/uip.c.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | iscsiuio Ubuntu 18.04.6 LTS (bionic) | 2.0.874-5ubuntu2.11+esm1 | [iscsiuio 2.0.874-5ubuntu2.11+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-iscsiuio-2.0.874-5ubuntu2.11-esm1.md) | Nov 30, 2020 |
| Linux | iscsiuio Ubuntu 20.04 LTS (focal) | 2.0.874-7.1ubuntu6.4 | [iscsiuio 2.0.874-7.1ubuntu6.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-iscsiuio-2.0.874-7.1ubuntu6.4.md) | Nov 30, 2020 |
| Linux | open-iscsi Ubuntu 18.04.6 LTS (bionic) | 2.0.874-5ubuntu2.11+esm1 | [open-iscsi 2.0.874-5ubuntu2.11+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-open-iscsi-2.0.874-5ubuntu2.11-esm1.md) | Nov 30, 2020 |
| Linux | open-iscsi Ubuntu 20.04 LTS (focal) | 2.0.874-7.1ubuntu6.4 | [open-iscsi 2.0.874-7.1ubuntu6.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-open-iscsi-2.0.874-7.1ubuntu6.4.md) | Nov 30, 2020 |

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Data as of 2026-11-09T01:18:40Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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