CVE-2021-47350

In the Linux kernel, the following vulnerability has been resolved: powerpc/mm: Fix lockup on kernel exec fault The powerpc kernel is not prepared to handle exec faults from kernel. Especially, the function isexecfault will return 'false' when an exec fault is taken by kernel, because the check i...

CVE-2021-47350 powerpc/mm: Fix lockup on kernel exec fault

In the Linux kernel, the following vulnerability has been resolved: powerpc/mm: Fix lockup on kernel exec fault The powerpc kernel is not prepared to handle exec faults from kernel. Especially, the function isexecfault will return 'false' when an exec fault is taken by kernel, because the check i...

CVE-2021-47350

Affected software: Linux kernel on PowerPC. The issue stems from is_exec_fault() returning false for exec faults taken by the kernel, causing set_access_flags_filter() not to set PAGE_EXEC and leading to a perpetual minor exec fault. Root cause traced through a sequence of commits (notably d7df24...