PatchTheCVECVE-2023-2794: A flaw was found in ofono, an Open Source Telephony on Linux
CVE-2023-2794 is a high-severity flaw (CVSS 8.1) affecting ofono, fedora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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().
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.1 (High) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.2% (top 31%) |
| CISA exploited list | No |
| Weakness | CWE-119 |
| Published | 2024-04-10 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2023-2794?
ofono: upgrade to 2.5; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2023-2794 being exploited?
CVE-2023-2794 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2023-2794 affect?
CVE-2023-2794 affects ofono, fedora. Severity is high (CVSS 8.1). 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 m
How urgent is CVE-2023-2794?
Priority 61/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist
Related CVEs
- CVE-2024-7547 HIGH 7.8 DOWNGRADE oFono SMS Decoder Stack-based Buffer Overflow Privilege Escalation Vulnerability
- CVE-2024-7546 HIGH 7.8 DOWNGRADE oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability
- CVE-2024-7545 HIGH 7.8 DOWNGRADE oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability
- CVE-2024-7544 HIGH 7.8 DOWNGRADE oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability
- CVE-2024-7543 HIGH 7.8 DOWNGRADE oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability