Vulnerability CVE-2024-38545
Published: 2024-06-19

Description:
In the Linux kernel, the following vulnerability has been resolved:

RDMA/hns: Fix UAF for cq async event

The refcount of CQ is not protected by locks. When CQ asynchronous
events and CQ destruction are concurrent, CQ may have been released,
which will cause UAF.

Use the xa_lock() to protect the CQ refcount.

 References:
https://git.kernel.org/stable/c/763780ef0336a973e933e40e919339381732dcaf
https://git.kernel.org/stable/c/63da190eeb5c9d849b71f457b15b308c94cbaf08
https://git.kernel.org/stable/c/39d26cf46306bdc7ae809ecfdbfeff5aa1098911
https://git.kernel.org/stable/c/37a7559dc1358a8d300437e99ed8ecdab0671507
https://git.kernel.org/stable/c/a942ec2745ca864cd8512142100e4027dc306a42
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