CVE-2022-49896

In the Linux kernel, the following vulnerability has been resolved: cxl/pmem: Fix cxl_pmem_region and cxl_memdev leak When a cxl_nvdimm object goes through a ->remove() event (device physically removed, nvdimm-bridge disabled, or nvdimm device disabled), then any associated regions must also be disabled. As highlighted by the cxl-create-region.sh test [1], a single device may host multiple regions, but the driver was only tracking one region at a time. This leads to a situation where only the last enabled region per nvdimm device is cleaned up properly. Other regions are leaked, and this also causes cxl_memdev reference leaks. Fix the tracking by allowing cxl_nvdimm objects to track multiple region associations.

The following products are affected by CVE-2022-49896 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2022-49896.

URL	Resource
https://git.kernel.org/stable/c/4d07ae22e79ebc2d7528bbc69daa53b86981cb3a
https://git.kernel.org/stable/c/f43b6bfdbab78606735ba81185cf0602b81e40b6
https://lore.kernel.org/linux-cve-announce/2025050100-CVE-2022-49896-2593@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-49896
https://www.cve.org/CVERecord?id=CVE-2022-49896