I'm having difficulty understanding
I'm having difficulty understanding
Posted Jul 3, 2019 18:01 UTC (Wed) by NYKevin (subscriber, #129325)In reply to: I'm having difficulty understanding by thestinger
Parent article: OpenPGP certificate flooding
If it is dereferencing NULL pointers, might it also be dereferencing non-NULL but invalid pointers? If so, there's probably an RCE vuln in there somewhere... I wonder how long it would take a determined nation-state attacker to backdoor everyone's boxes with booby-trapped keys?
Posted Jul 3, 2019 18:32 UTC (Wed)
by dd9jn (✭ supporter ✭, #4459)
[Link]
if (!a)
is an obvious bug in the diagnostic but no real harm is done. Needs to be fixed of course.
I'm having difficulty understanding
Derefing a NULL-ptr happens far more often than derefing an invalid pointer. This is the reason why practically all platforms do not map the page with address 0x0. For example
die ("something is wrong with %s\n", a->name);