From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Sat, 13 Aug 2022 21:00:10 +0000 (+0900)
Subject: udev/cdrom_id: check last track info
X-Git-Tag: v252-rc1~448
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=628998ecfa0d39b38874e1aecdb28022f80f3269;p=thirdparty%2Fsystemd.git

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 85cf5201c6a..d2c12621218 100644
--- 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;