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-rw-r--r--security/keys/proc.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/security/keys/proc.c b/security/keys/proc.c
index 12b750e51fbf..686a9ee0c5de 100644
--- a/security/keys/proc.c
+++ b/security/keys/proc.c
@@ -137,6 +137,13 @@ static int proc_keys_show(struct seq_file *m, void *v)
struct timespec now;
unsigned long timo;
char xbuf[12];
+ int rc;
+
+ /* check whether the current task is allowed to view the key (assuming
+ * non-possession) */
+ rc = key_task_permission(make_key_ref(key, 0), current, KEY_VIEW);
+ if (rc < 0)
+ return 0;
now = current_kernel_time();