- Vulnerability/
- CVE-2022-49429
CVE-2022-49429: RDMA/hfi1: Prevent panic when SDMA is disabled
First published: Wed Feb 26 2025(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel |
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Reference Links
- https://git.kernel.org/stable/c/33794e8e9bcb4affc0ebff9cdec85acc8b8a1762
- https://git.kernel.org/stable/c/0e4dda8b3f4c07ee9ea670a10ea3171a5e63a86f
- https://git.kernel.org/stable/c/e60ad83f645ee6fadd5a8057ba267aeec54f08fe
- https://git.kernel.org/stable/c/cc80d3c37cec9d6ddb140483647901bc7cc6c31d
- https://git.kernel.org/stable/c/32e6aea33944f364d51cd263e4cd236393a188b6
- https://git.kernel.org/stable/c/29952ab85d6c3fe0b7909d9a737f10c58bf6824d
- https://git.kernel.org/stable/c/22e7e400fd1a890db2ea13686324aff50e972f4f
- https://git.kernel.org/stable/c/629e052d0c98e46dde9f0824f0aa437f678d9b8f
Frequently Asked Questions
What is the severity of CVE-2022-49429?
CVE-2022-49429 has a medium severity level due to its potential to cause system panic.
How does CVE-2022-49429 impact the Linux kernel?
CVE-2022-49429 causes a null pointer dereference and system panic when the hfi1 module is loaded without SDMA capability.
How do I fix CVE-2022-49429?
To mitigate CVE-2022-49429, ensure that the hfi1 module is not loaded with HFI1_CAP_SDMA off or update the Linux kernel to the latest patched version.
Which versions of the Linux kernel are affected by CVE-2022-49429?
CVE-2022-49429 affects certain versions of the Linux kernel that utilize the hfi1 module with SDMA capability disabled.
Is CVE-2022-49429 exploitable remotely?
CVE-2022-49429 is not considered remotely exploitable as it requires local privilege to trigger the panic.
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