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(parent: f53a7f4) | patch
exec: Limit arg stack to at most 75% of _STK_LIM
authorKees Cook <keescook@chromium.org>
Fri, 7 Jul 2017 18:57:29 +0000 (11:57 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 8 Jul 2017 03:05:08 +0000 (20:05 -0700)
commitcaac94a8c5d969d6e857ced55606cf1d52ad421c
tree0ba6e0c9338f1b3de6498793ecff2643c4fd289ctree | snapshot
parentf53a7f4b05256403fac3d6b28cdcd1e7cbea6e83commit | diff
exec: Limit arg stack to at most 75% of _STK_LIM

To avoid pathological stack usage or the need to special-case setuid
execs, just limit all arg stack usage to at most 75% of _STK_LIM (6MB).

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/exec.c diff | blob | history
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