|
|
|
|
|
|
by qb45
4807 days ago
|
|
|
There used to be a whole class of Linux vulns involving mmap()ing memory at virtual address 0x0, filling it with fake kernel data structures containing some data value val and some pointer ptr and triggering NULL dereference in kernel code which was known to parse this structure and copy val to address pointed by ptr. They had to "fix" it by blocking userspace memory mappings at the 0th page. |
|
|