libosmocore through 1.14.1 contains a buffer overflow in osmo_iuup_compute_payload_crc() in src/gsm/iuup.c.

published 2026-10-26 14 d ago modified 2026-10-29 10 d ago also EUVD-2026-110101

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits: 0; none known

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.

Patch / fix

distros 2 links 1

debian opensuse

libosmocore Debian 14 1.14.2-1

debian advisories DEBIAN-CVE-2026-104591

libosmocore openSUSE Leap 16.0 1.14.2-bp160.1.1
libosmocore openSUSE Tumbleweed 1.14.2-2.1

opensuse advisories openSUSE-SU-2026:22220-1 openSUSE-SU-2026:12388-1

github.com/osmocom/libosmocore@0b0f165 commit

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-104591 updated 2026-11-02 cvss 7.5

libosmocore: libosmocore: Denial of Service via buffer overflow in osmo_iuup_compute_payload_crc()

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 10 d ago (2026-10-29)

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption

References

Sources

CVE List CVE-2026-104591
NVD CVE-2026-104591

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary