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(parent: a2ea466) | 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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 21 Jul 2017 04:59:10 +0000 (06:59 +0200)
commitc1152f1638c53af9ec782d77f3f2e6f6c8fb9b0a
tree3cc28150fa5edc225baf446790aa4f4f0dafde22tree | snapshot
parenta2ea4661b8d8057c116ca8773d24ba55523e0f2ecommit | diff
exec: Limit arg stack to at most 75% of _STK_LIM

commit da029c11e6b12f321f36dac8771e833b65cec962 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/exec.c diff | blob | history
wrapfs-5.3.y