RDMA/hfi1: Prevent panic when SDMA is disabled
In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Prevent panic when SDMA is disabled If the hfi1 module is loaded with HFI1_CAP_SDMA off, a call to hfi1_write_iter() will dereference a NULL pointer and panic. A typical stack frame is: sdma_select_user_engine [hfi1] hfi1_user_sdma_process_request [hfi1] hfi1_write_iter [hfi1] do_iter_readv_writev do_iter_write vfs_writev do_writev do_syscall_64 The fix is to test for SDMA in hfi1_write_iter() and fail the I/O with EINVAL.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Prevent panic when SDMA is disabled If the hfi1 module is loaded with HFI1_CAP_SDMA off, a call to hfi1_write_iter() will dereference a NULL pointer and panic. A typical stack frame is: sdma_select_user_engine [hfi1] hfi1_user_sdma_process_request [hfi1] hfi1_write_iter [hfi1] do_iter_readv_writev do_iter_write vfs_writev do_writev do_syscall_64 The fix is to test for SDMA in hfi1_write_iter() and fail the I/O with EINVAL.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/0e4dda8b3f4c07ee9ea670a10ea3171a5e63a86f
- https://git.kernel.org/stable/c/22e7e400fd1a890db2ea13686324aff50e972f4f
- https://git.kernel.org/stable/c/29952ab85d6c3fe0b7909d9a737f10c58bf6824d
- https://git.kernel.org/stable/c/32e6aea33944f364d51cd263e4cd236393a188b6
- https://git.kernel.org/stable/c/33794e8e9bcb4affc0ebff9cdec85acc8b8a1762
- https://git.kernel.org/stable/c/629e052d0c98e46dde9f0824f0aa437f678d9b8f
- https://git.kernel.org/stable/c/cc80d3c37cec9d6ddb140483647901bc7cc6c31d
- https://git.kernel.org/stable/c/e60ad83f645ee6fadd5a8057ba267aeec54f08fe
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49429.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-49429