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.

Classification

CVE ID: CVE-2024-38545

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 5.06% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://git.kernel.org/stable/c/330c825e66ef65278e4ebe57fd49c1d6f3f4e34e
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

Timeline