CVE-2025-40157

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the Linux kernel related to the i10nm edac driver on some Intel Granite Rapids servers. A call trace may appear due to a shift-out-of-bounds error in drivers/edac/skx common.c:453:16. This occurs when a BIOS disables a memory controller without any populated memory DIMMs, resulting in an invalid value (~0) in the DIMMMTR register. The issue is triggered during DIMM enumeration on a disabled memory controller. The function skx get dimm info.cold is called within skx edac common, which in turn is called by i10nm get dimm config within i10nm edac, and ultimately by skx register mci and i10nm init.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.