CVE-2026-32848 NetBSD cryptodev Race Condition Double-Free via cryptodev_op()
Local attackers can trigger a double-free in the NetBSD kernel via a race condition in cryptodev, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-32848?
CVE-2026-32848 is a medium-severity vulnerability in NetBSD src, published on 18 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
NetBSD prior to commit ec8451e contains a race condition vulnerability in cryptodev_op() within the opencrypto subsystem that allows local attackers to trigger a double-free condition by concurrently issuing CIOCCRYPT operations on the same session identifier on SMP systems. Attackers can exploit mutable per-operation state embedded in the csession struct to corrupt kernel heap memory.
Which versions are affected by CVE-2026-32848?
How do I fix CVE-2026-32848?
No fix has been published for CVE-2026-32848 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-32848 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32848 exists.
Sources
Also known as GHSA-5qv9-q5h2-c748.