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| author |   Djalal Harouni <tixxdz@opendz.org> | 2012-07-30 14:42:28 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-30 17:25:20 -0700 |
| commit | bc452b4b65bd589083a7a7ba4f14f85dfc8454fa (patch) | |
| tree | 43e2d8031fea729f32f7800936d61fbc59fc7cdd /kernel | |
| parent | proc: environ_read() make sure offset points to environment address range (diff) | |
| download | linux-dev-bc452b4b65bd589083a7a7ba4f14f85dfc8454fa.tar.xz linux-dev-bc452b4b65bd589083a7a7ba4f14f85dfc8454fa.zip | |
proc: do not allow negative offsets on /proc/<pid>/environ
__mem_open() which is called by both /proc/<pid>/environ and
/proc/<pid>/mem ->open() handlers will allow the use of negative offsets.
/proc/<pid>/mem has negative offsets but not /proc/<pid>/environ.
Clean this by moving the 'force FMODE_UNSIGNED_OFFSET flag' to mem_open()
to allow negative offsets only on /proc/<pid>/mem.
Signed-off-by: Djalal Harouni <tixxdz@opendz.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Brad Spengler <spender@grsecurity.net>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions