Уязвимость компонента drivers/tty/vt/keyboard.c ядра операционной системы Linux, позволяющая нарушителю выполнить произвольный код

Уязвимость функции __split_huge_pmd (mm/huge_memory.c) ядра операционных систем Linux, позволяющая нарушителю выполнить произвольный код

Уязвимость функции get_user_pages(), позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость компонента mm/mremap.c ядра операционной системы Linux, связанная с выходом операции за допустимые границы буфера данных, позволяющая нарушителю повысить свои привилегии в системе

A flaw was found in the Linux Kernel in versions after 4.5-rc1 in the way mremap handled DAX Huge Pages. This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the system.

An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/keyboard.c has an integer overflow if k_ascii is called several times in a row, aka CID-b86dab054059. NOTE: Members in the community argue that the integer overflow does not lead to a security issue in this case.

An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.

An issue was discovered in the Linux kernel before 5.7.3, related to mm/gup.c and mm/huge_memory.c. The get_user_pages (aka gup) implementation, when used for a copy-on-write page, does not properly consider the semantics of read operations and therefore can grant unintended write access, aka CID-17839856fd58.