Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected ea4c399642b85dc30f44d90ee805c6a18fa03062 before c98197ee3cd28288da13dc9881bb9e74daa7cbbc; affected ea4c399642b85dc30f44d90ee805c6a18fa03062 before 08b8630b557828aedb1d9ef0a6e2ec421f334ee2; affected ea4c399642b85dc30f44d90ee805c6a18fa03062 before cf3ebd89e754015625fee90aa938f6bc79a2c974 |
| Linux / Linux | affected 6.18; unaffected 0 before 6.18; unaffected 6.18.51 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.