CVE-2022-49895

In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix decoder allocation crash When an intermediate port's decoders have been exhausted by existing regions, and creating a new region with the port in question in it's hierarchical path is attempted, cxl_port_attach_region() fails to find a port decoder (as would be expected), and drops into the failure / cleanup path. However, during cleanup of the region reference, a sanity check attempts to dereference the decoder, which in the above case didn't exist. This causes a NULL pointer dereference BUG. To fix this, refactor the decoder allocation and de-allocation into helper routines, and in this 'free' routine, check that the decoder, @cxld, is valid before attempting any operations on it.

The following products are affected by CVE-2022-49895 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2022-49895.

URL	Resource
https://git.kernel.org/stable/c/71ee71d7adcba648077997a29a91158d20c40b09
https://git.kernel.org/stable/c/c6813b5610ac53af73edd87a660d23a0511faa47
https://lore.kernel.org/linux-cve-announce/2025050159-CVE-2022-49895-50fa@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-49895
https://www.cve.org/CVERecord?id=CVE-2022-49895