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(parent: 4d5266f) | 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 05:00:12 +0000 (07:00 +0200)
commit2ee500dcfdcb688aceb06ea164541a5e99aecfac
treea60ebc51f506d0436e55c17df09297efffd84398tree | snapshot
parent4d5266f108957aff03a335cf3ba23b3742290bcfcommit | 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-4.11.y