CVE-2026-42801 Deference after null check in as_rrc
A null pointer dereference in the ASR Crane and Falcon Linux operating systems allows attackers to cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-42801?
CVE-2026-42801 is a high-severity vulnerability in ASR Crane，Falcon, published on 23 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
NULL pointer dereference vulnerability in ASR Crane，Falcon on Linux (as_rrc module) allows Pointer Manipulation.
This vulnerability is associated with program file 3g.mod/lib/src/urrsir.c.
Weakness: CWE-476
Which versions are affected by CVE-2026-42801?
How do I fix CVE-2026-42801?
No fix has been published for CVE-2026-42801 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-42801 being exploited?
There is no known exploitation of CVE-2026-42801 in the wild and no public exploit code.
Sources
Also known as GHSA-h9m5-vm2j-qx22.