CVE-2026-43295 rapidio: replace rio_free_net() with kfree() in rio_scan_alloc_net()
A null pointer dereference in the Linux kernel RapidIO subsystem can cause a denial of service when memory allocation fails.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-43295?
CVE-2026-43295 is a medium-severity vulnerability in Linux kernel, published on 8 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
rapidio: replace rio_free_net() with kfree() in rio_scan_alloc_net()
When idtab allocation fails, net is not registered with rio_add_net() yet, so kfree(net) is sufficient to release the memory. Set mport->net to NULL to avoid dangling pointer.
Which versions are affected by CVE-2026-43295?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43295?
Apply the vendor's patch.
Is CVE-2026-43295 being exploited?
There is no known exploitation of CVE-2026-43295 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43295, DEBIAN-CVE-2026-43295, GHSA-48jm-q77p-w8gv, ROOT-OS-DEBIAN-11-CVE-2026-43295, ROOT-OS-UBUNTU-2204-CVE-2026-43295, ROOT-OS-UBUNTU-2404-CVE-2026-43295 and 1 more.