CVE-2026-43102 net: airoha: Fix memory leak in airoha_qdma_rx_process()
A memory leak in the Airoha QDMA driver allows attackers to cause a denial of service by triggering error paths in packet processing.
- 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-2026-43102?
CVE-2026-43102 is a medium-severity denial of service vulnerability in Linux kernel, published on 6 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:
net: airoha: Fix memory leak in airoha_qdma_rx_process()
If an error occurs on the subsequents buffers belonging to the non-linear part of the skb (e.g. due to an error in the payload length reported by the NIC or if we consumed all the available fragments for the skb), the page_pool fragment will not be linked to the skb so it will not return to the pool in the airoha_qdma_rx_process() error path. Fix the memory leak partially reverting commit 'd6d2b0e1538d ("net: airoha: Fix page recycling in airoha_qdma_rx_process()")' and always running page_pool_put_full_page routine in the airoha_qdma_rx_process() error path.
Weakness: CWE-401
Which versions are affected by CVE-2026-43102?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43102?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-43102 being exploited?
There is no known exploitation of CVE-2026-43102 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43102, DEBIAN-CVE-2026-43102, GHSA-4gx5-8rx4-vxmj, UBUNTU-CVE-2026-43102.