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-rw-r--r--security/keys/permission.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/security/keys/permission.c b/security/keys/permission.c
index 1c3651670ce9..03db073ba45c 100644
--- a/security/keys/permission.c
+++ b/security/keys/permission.c
@@ -27,12 +27,6 @@ int key_task_permission(const key_ref_t key_ref,
key = key_ref_to_ptr(key_ref);
- /* use the top 8-bits of permissions for keys the caller possesses */
- if (is_key_possessed(key_ref)) {
- kperm = key->perm >> 24;
- goto use_these_perms;
- }
-
/* use the second 8-bits of permissions for keys the caller owns */
if (key->uid == context->fsuid) {
kperm = key->perm >> 16;
@@ -61,6 +55,12 @@ int key_task_permission(const key_ref_t key_ref,
kperm = key->perm;
use_these_perms:
+ /* use the top 8-bits of permissions for keys the caller possesses
+ * - possessor permissions are additive with other permissions
+ */
+ if (is_key_possessed(key_ref))
+ kperm |= key->perm >> 24;
+
kperm = kperm & perm & KEY_ALL;
return kperm == perm;

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