Уязвимость реализации механизма Stack Guard-Page ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость реализации протокола Keberos v5 ядра операционной системы Linux, позволяющая нарушителю повысить свои привилегии или вызвать отказ в обслуживании

The Linux Kernel imposes a size restriction on the arguments and environmental strings passed through RLIMIT_STACK/RLIM_INFINITY (1/4 of the size), but does not take the argument and environment pointers into account, which allows attackers to bypass this limitation. This affects Linux Kernel versions 4.11.5 and earlier. It appears that this feature was introduced in the Linux Kernel version 2.6.23.

In the Linux kernel before version 4.12, Kerberos 5 tickets decoded when using the RXRPC keys incorrectly assumes the size of a field. This could lead to the size-remaining variable wrapping and the data pointer going over the end of the buffer. This could possibly lead to memory corruption and possible privilege escalation.