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Capabilities: BUG when an invalid capability is requested
[deliverable/linux.git]
/
kernel
/
capability.c
diff --git
a/kernel/capability.c
b/kernel/capability.c
index 19f9eda8997530489bc499908d1934488d740b5e..adb262f83de122fed2a8413822b046f309843e1b 100644
(file)
--- a/
kernel/capability.c
+++ b/
kernel/capability.c
@@
-514,6
+514,11
@@
asmlinkage long sys_capset(cap_user_header_t header, const cap_user_data_t data)
*/
int capable(int cap)
{
+ if (unlikely(!cap_valid(cap))) {
+ printk(KERN_CRIT "capable() called with invalid cap=%u\n", cap);
+ BUG();
+ }
+
if (has_capability(current, cap)) {
current->flags |= PF_SUPERPRIV;
return 1;
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