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| author |   martynas <martynas@openbsd.org> | 2014-05-06 23:32:34 +0000 |
|---|---|---|
| committer | martynas <martynas@openbsd.org> | 2014-05-06 23:32:34 +0000 |
| commit | 74fa18875271231e9dba5633bbc7dc87f158e9ec (patch) | |
| tree | c3fd807ff1a27dfda0ed45a9e3de64632f53155e /lib/libc/regex/regexec.c | |
| parent | factor out the safepath (diff) | |
| download | wireguard-openbsd-74fa18875271231e9dba5633bbc7dc87f158e9ec.tar.xz wireguard-openbsd-74fa18875271231e9dba5633bbc7dc87f158e9ec.zip | |
When the stack protector heuristics doesn't cover a function, leave
a little pointer-sized gap before the return value. This protects
from common off-by-one type of bugs and costs nothing: the attacker
won't be able to overwrite return pointer. Developed at m2k14,
thanks for the hackathon!
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