CVE-2026-89509: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: ea4c399642b85dc30f44d90ee805c6a18fa03062 преди c98197ee3cd28288da13dc9881bb9e74daa7cbbc; ea4c399642b85dc30f44d90ee805c6a18fa03062 преди 08b8630b557828aedb1d9ef0a6e2ec421f334ee2; ea4c399642b85dc30f44d90ee805c6a18fa03062 преди cf3ebd89e754015625fee90aa938f6bc79a2c974
• Linux Linux: 6.18; преди 6.18; 6.18.51 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89509
• https://nvd.nist.gov/vuln/detail/CVE-2026-89509
• https://git.kernel.org/stable/c/c98197ee3cd28288da13dc9881bb9e74daa7cbbc
• https://git.kernel.org/stable/c/08b8630b557828aedb1d9ef0a6e2ec421f334ee2
• https://git.kernel.org/stable/c/cf3ebd89e754015625fee90aa938f6bc79a2c974