sd-device: reject empty driver name

If ":" was the last char in the string, we would call access() on ".../drivers/", which would pass. It probably doesn't matter, but let's reject this anyway.
2021-05-05 17:15:04 +02:00
parent 3e2d0c6ab2
commit 52a89a5f08
1 changed files with 1 additions and 1 deletions
@@ -274,7 +274,7 @@ _public_ int sd_device_new_from_subsystem_sysname(sd_device **ret, const char *s
                const char *subsys, *sep;

                sep = strchr(sysname, ':');
-                if (sep) {
+                if (sep && sep[1] != '\0') { /* Require ":" and something non-empty after that. */
                        subsys = memdupa_suffix0(sysname, sep - sysname);

                        if (snprintf_ok(syspath, sizeof syspath, "/sys/subsystem/%s/drivers/%s", subsys, sep + 1) &&