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authorCyrill Gorcunov <gorcunov@openvz.org>2012-06-07 14:21:11 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-06-07 14:43:55 -0700
commit1ad75b9e16280ca4e2501a629a225319cf2eef2e (patch)
tree360b86785011959e68a4d87cb32bd92120370990 /kernel/sys.c
parentbafb282df29c1524b1617019adebd6d0c3eb7a47 (diff)
downloadlinux-linaro-stable-1ad75b9e16280ca4e2501a629a225319cf2eef2e.tar.gz
c/r: prctl: add minimal address test to PR_SET_MM
Make sure the address being set is greater than mmap_min_addr (as suggested by Kees Cook). Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Acked-by: Kees Cook <keescook@chromium.org> Cc: Serge Hallyn <serge.hallyn@canonical.com> Cc: Tejun Heo <tj@kernel.org> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sys.c')
-rw-r--r--kernel/sys.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sys.c b/kernel/sys.c
index 54f20fdee93c..19a2c7139960 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1869,7 +1869,7 @@ static int prctl_set_mm(int opt, unsigned long addr,
if (opt == PR_SET_MM_EXE_FILE)
return prctl_set_mm_exe_file(mm, (unsigned int)addr);
- if (addr >= TASK_SIZE)
+ if (addr >= TASK_SIZE || addr < mmap_min_addr)
return -EINVAL;
error = -EINVAL;