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SELinux: Fix kernel BUG on empty security contexts.
[GitHub/mt8127/android_kernel_alcatel_ttab.git]
/
security
/
selinux
/
ss
/
services.c
diff --git
a/security/selinux/ss/services.c
b/security/selinux/ss/services.c
index b4feecc3fe0110d10bbdc183c369a03ab8495a6c..18caa16de27b6a814e7c57b6d43f5cc8501744d8 100644
(file)
--- a/
security/selinux/ss/services.c
+++ b/
security/selinux/ss/services.c
@@
-1231,6
+1231,10
@@
static int security_context_to_sid_core(const char *scontext, u32 scontext_len,
struct context context;
int rc = 0;
+ /* An empty security context is never valid. */
+ if (!scontext_len)
+ return -EINVAL;
+
if (!ss_initialized) {
int i;