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authorKees Cook <keescook@chromium.org>2014-05-22 02:23:46 +0400
committerKees Cook <keescook@chromium.org>2014-07-18 23:13:38 +0400
commit1d4457f99928a968767f6405b4a1f50845aa15fd (patch)
tree522641b08f4a465035910a74a3871ad38e62df01 /kernel/seccomp.c
parent8855d608c145c1ca0e26f4da00741080bb49d80d (diff)
downloadlinux-1d4457f99928a968767f6405b4a1f50845aa15fd.tar.xz
sched: move no_new_privs into new atomic flags
Since seccomp transitions between threads requires updates to the no_new_privs flag to be atomic, the flag must be part of an atomic flag set. This moves the nnp flag into a separate task field, and introduces accessors. Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Andy Lutomirski <luto@amacapital.net>
Diffstat (limited to 'kernel/seccomp.c')
-rw-r--r--kernel/seccomp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index f0652578af75..d2596136b0d1 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -241,7 +241,7 @@ static long seccomp_attach_filter(struct sock_fprog *fprog)
* This avoids scenarios where unprivileged tasks can affect the
* behavior of privileged children.
*/
- if (!current->no_new_privs &&
+ if (!task_no_new_privs(current) &&
security_capable_noaudit(current_cred(), current_user_ns(),
CAP_SYS_ADMIN) != 0)
return -EACCES;