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(parent: 67db392) | patch
xtensa: prevent arbitrary read in ptrace
authorDan Rosenberg <drosenberg@vsecurity.com>
Tue, 26 Jul 2011 00:11:53 +0000 (17:11 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 26 Jul 2011 03:57:07 +0000 (20:57 -0700)
commit0d0138ebe24b94065580bd2601f8bb7eb6152f56
tree13ab981dbddd25b57bb821394d0a3c78bf8fb25atree | snapshot (tar.gz zip)
parent67db392d1124e14684e23deb572de2a63b9b3b69commit | diff
xtensa: prevent arbitrary read in ptrace

Prevent an arbitrary kernel read.  Check the user pointer with access_ok()
before copying data in.

[akpm@linux-foundation.org: s/EIO/EFAULT/]
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: Christian Zankel <chris@zankel.net>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/xtensa/kernel/ptrace.c diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)