Title: Linux Kernel mxcsr CPU State Register Modification
Jun 03, 2003
Linux kernel contains a flaw that may allow a local denial of service. The issue is triggered when the Linux kernel function "set_fpxregs" doesn't consider the "__copy_from_user" failed condition. This could cause the contents of the MXCSR register to be corrupted, and potentially cause a reserved bit within the register to be unexpectedly set, resulting in loss of availability for the platform.
Local Access Required
Loss of Availability
Upgrade the linux kernel to version 2.4.23 or higher, as it has been reported to fix this vulnerability. This can be done through various Linux vendor patches or manually installing a newer kernel. An upgrade is required as there are no known workarounds.