udev/cdrom_id: check last track info

Fixes off-by-one issue.

Fixes #24306.

diff --git a/src/udev/cdrom_id/cdrom_id.c b/src/udev/cdrom_id/cdrom_id.c
index 85cf5201c6a1d9960debfb60ddcfef89e9bd6460..d2c126212182993f56aa714f2c3be3c7dc0d709d 100644 (file)
--- a/src/udev/cdrom_id/cdrom_id.c
+++ b/src/udev/cdrom_id/cdrom_id.c
@@ -704,7 +704,7 @@ static int cd_media_toc(Context *c) {
         /* Take care to not iterate beyond the last valid track as specified in
          * the TOC, but also avoid going beyond the TOC length, just in case
          * the last track number is invalidly large */
-        for (size_t i = 4; i + 8 < len && num_tracks > 0; i += 8, --num_tracks) {
+        for (size_t i = 4; i + 8 <= len && num_tracks > 0; i += 8, --num_tracks) {
                 bool is_data_track;
                 uint32_t block;