The Linux kernel prior to 2.2.19 does not have unregister calls for (1) CPUID and (2) MSR drivers, which could cause a DoS (crash) by unloading and reloading the drivers.
The kernels used in Debian GNU/Linux 22 have been found to have
multiple security problems This is a list of problems based
on the 2219 release notes as found on
wwwlinuxorguk/:
binfmt_misc used user pages directly
the CPIA driver had an off-by-one error in the buffer code which made
it possible for users to write into kernel memo ...
Vulmon