# CVE-2026-104591: libosmocore: libosmocore through 1.14.1 contains a buffer overflow in osmo_iuup_compute_payload_crc() in src/gsm/iuup.c

CVE-2026-104591 is fixed in libosmocore on 1 platform, first by DEBIAN-CVE-2026-104591, released October 27, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-104591
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0045
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 26, 2026

## Description

libosmocore through 1.14.1 contains a buffer overflow in osmo_iuup_compute_payload_crc() in src/gsm/iuup.c. This allows a remote attacker to cause a denial of service.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libosmocore Debian 14 | 1.14.2-1 | [DEBIAN-CVE-2026-104591](https://patchblox.com/security/data/fix/linux/debian-cve-2026-104591.md) | Oct 27, 2026 |
| Linux | libosmocore opensuse-leap 16.0 | 1.14.2-bp160.1.1 | [OPENSUSE-SU-2026:22220-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22220-1.md) | Nov 7, 2026 |

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Data as of 2026-11-08T00:53:09Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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