CVE-2025-59150 Suricata: Keyword tls.subjectaltname can lead to NULL-ptr deref
A NULL pointer dereference in Suricata's tls.subjectaltname keyword handling causes a segmentation fault, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-59150?
CVE-2025-59150 is a high-severity vulnerability in Oisf Suricata, published on 1 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Version 8.0.0's usage of the tls.subjectaltname keyword can lead to a segmentation fault when the decoded subjectaltname contains a NULL byte. This issue is fixed in version 8.0.1. To workaround this issue, disable rules using the tls.subjectaltname keyword.
Weakness: CWE-476
Which versions are affected by CVE-2025-59150?
It affects 1 product.
Products include Oisf Suricata.
How do I fix CVE-2025-59150?
Upgrade to a fixed version.
Is CVE-2025-59150 being exploited?
There is no known exploitation of CVE-2025-59150 in the wild and no public exploit code.
Other vulnerabilities in Oisf Suricata
Sources
Also known as GHSA-mhv7-qfmj-m3f3, UBUNTU-CVE-2025-59150.