CVE-2025-38252 Information

Jul 10, 2025 cve

Description

In the Linux kernel the following vulnerability has been resolved:

cxl/ras: Fix CPER handler device confusion

By inspection cxl_cper_handle_prot_err() is making a series of fragile assumptions that can lead to crashes:

1/ It assumes that endpoints identified in the record are a CXL-type-3 device nothing guarantees that.

2/ It assumes that the device is bound to the cxl_pci driver nothing guarantees that.

3/ Minor it holds the device lock over the switch-port tracing for no reason as the trace is 100% generated from data in the record.

Correct those by checking that the PCIe endpoint parents a cxl_memdev before assuming the format of the driver data and move the lock to where it is required. Consequently this also makes the implementation ready for CXL accelerators that are not bound to cxl_pci.

Reference

https://git.kernel.org/stable/c/3c70ec71abdaf4e4fa48cd8fdfbbd864d78235a8 https://git.kernel.org/stable/c/4bcb8dd36e9e3fad6c22862ac5b6993df838309b

CNNVD-202507-1294 (Published: 2025-07-09)

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