CVE-2026-80625 RDMA/hns: Fix memory leak of bonding resources
A race condition in the Linux kernel RDMA driver causes a memory leak and potential kernel panic during concurrent driver removal and reset.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-80625?
CVE-2026-80625 is a memory corruption vulnerability in Linux, published on 28 Aug 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:
RDMA/hns: Fix memory leak of bonding resources
In a corner case of concurrent driver removal and driver reset, bonding resource is first released in hns_roce_hw_v2_exit() during driver removal, and then is allocated again in hns_roce_register_device() during driver reset. This leads to memory leak because the release timing has already passed. This may also lead to a kernel panic as below because of the leaked notifier callback:
Call trace: 0xffffa20fccc04978 (P) raw_notifier_call_chain+0x20/0x38 call_netdevice_notifiers_info+0x60/0xb8 netdev_lower_state_changed+0x4c/0xb8
As Sashiko suggested, the teardown order of bonding resources should be inverted to make sure the resources are released when the driver is removed.
Which versions are affected by CVE-2026-80625?
How do I fix CVE-2026-80625?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-80625 being exploited?
There is no known exploitation of CVE-2026-80625 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-80625, GHSA-q7c4-mw3p-rvrq, UBUNTU-CVE-2026-80625.