Fix out-of-bounds table access

Change-Id: I7603dfa64ae2a2a67613b0ff7f8b6d58daae4a1b

diff --git a/src/udev/udev-builtin-input_id.c b/src/udev/udev-builtin-input_id.c
index 840bd01..c27a2fe 100644 (file)
--- a/src/udev/udev-builtin-input_id.c
+++ b/src/udev/udev-builtin-input_id.c
@@ -113,7 +113,7 @@ static void get_cap_mask(sd_device *pdev, const char* attr,
                 log_device_debug(pdev, "%s decoded bit map:", attr);
                 val = bitmask_size / sizeof (unsigned long);
                 /* skip over leading zeros */
-                while (bitmask[val-1] == 0 && val > 0)
+                while (val > 0 && bitmask[val-1] == 0)
                         --val;
                 for (i = 0; i < val; ++i) {
                         DISABLE_WARNING_FORMAT_NONLITERAL;