What’s Vulnerable › Vulnerabilities

CVE-2023-2794: Ofono: sms decoder stack-based buffer overflow remote code execution vulnerability within the decode_deliver() function

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-04-10 · updated 2026-06-17
• Weakness: CWE-119

Description

A flaw was found in ofono, an Open Source Telephony on Linux. A stack overflow bug is triggered within the decode_deliver() function during the SMS decoding. It is assumed that the attack scenario is accessible from a compromised modem, a malicious base station, or just SMS. There is a bound check for this memcpy length in decode_submit(), but it was forgotten in decode_deliver().

Affected products

• Fedoraproject Fedora: 39, 40
• oFono: before 2.5 — fixed in 2.5

How to fix

Upgrade to a fixed version: oFono 2.5. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2255387
• https://bugzilla.redhat.com/show_bug.cgi?id=2255387
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RLAWJAAS3HDI2KMCZXF4DMR3Y4BQNMKO/

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