barco

3 ms·

1.
by barco 2y ago
Does iOS have something like PTRACE_SYSCALL to hook up on syscalls entry and maybe change the return value? (Or detect where the SVC is being made)
2.
by barco 2y ago
I reported a variant of this issue that (to me) was unexpected: * You add someone to your private repo. * After some time, you revoke their access. As long as they keep a fork (which you can't control) they can use this same method to
3.
by barco 2y ago
There are multiple versions of HWAsan. One for ARMv8 with Top-Byte-Ignore: you can use the top byte of memory addresses to store a tag. When you allocate memory you return the "tagged" pointer and internally store "this regi
4.
by barco 3y ago
If you name it `NUMBER_ELEMENTS_AVERAGED`, then when you add a new element to average, you will miss the fact that you also need to modify that value :) You either have them on a list and calculate it dynamically based on the size, or have
5.
by barco 4y ago
Given the nature of super forks in GitHub, if you are no longer a contributor, but keep your fork, you would be able to see the commits that happen in the original repo and all its forks. There used to be a way to bypass the deletion, which
6.
GitHub lets users access private repos after they have been kicked out(reddit.com)
2 points by barco 8y ago|0 comments
7.
by barco 8y ago
In x86 and x86_64 it doesn't matter whether the caller has control or not over the return address, because there's a change of privilege when the kernel returns from the interrupt (IRET instruction). So at that point it would be e