Description
In the Linux kernel, the following vulnerability has been resolved:
RDMA/ionic: Embed counter driver data in rdma_counter allocation
Commit 7e53b31acc7f ("RDMA/core: Create and destroy rdma_counter using rdma_zalloc_drv_obj()") requires drivers implementing counter ops to embed struct rdma_counter in a driver-specific struct, register its size via INIT_RDMA_OBJ_SIZE, and provide a counter_init callback.
The ionic driver was merged without this adaptation, causing a NULL pointer dereference in alloc_and_bind() since rdma_zalloc_drv_obj() allocates zero bytes when size_rdma_counter is unset.
Consolidate struct ionic_counter into a new struct ionic_rdma_counter that embeds struct rdma_counter, replace the xarray with a lightweight ida for ID allocation, and add the required counter_init and INIT_RDMA_OBJ_SIZE declarations.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= ea4c399642b85dc30f44d90ee805c6a18fa03062, < c98197ee3cd28288da13dc9881bb9e74daa7cbbc; >= ea4c399642b85dc30f44d90ee805c6a18fa03062, < 08b8630b557828aedb1d9ef0a6e2ec421f334ee2; >= ea4c399642b85dc30f44d90ee805c6a18fa03062, < cf3ebd89e754015625fee90aa938f6bc79a2c974 |
| Linux | Linux | 6.18 |
References
Timeline
- Published
- Sep 11, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received