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(parent: c8f5847) | patch
uml: check length in exitcode_proc_write()
authorDan Carpenter <dan.carpenter@oracle.com>
Tue, 29 Oct 2013 19:06:04 +0000 (22:06 +0300)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 30 Oct 2013 19:24:49 +0000 (12:24 -0700)
commit3134d018d67611735a30b3ec8a81f0311a0aed6c
treed05f085f110325cf7e8c2bdda642b561225989aetree | snapshot
parentc8f58474a355f6beb0feb61c519dab81b231f413commit | diff
uml: check length in exitcode_proc_write()

We don't cap the size of buffer from the user so we could write past the
end of the array here.  Only root can write to this file.

Reported-by: Nico Golde <nico@ngolde.de>
Reported-by: Fabian Yamaguchi <fabs@goesec.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/um/kernel/exitcode.c diff | blob | history
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