gstreamer1.0-plugins-base: fix CVE-2025-47806

Upstream-Status: Backport from https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/da4380c4df0e00f8d0bad569927bfc7ea35ec37d

(From OE-Core rev: fbe8dd2aa6160530b84d3a174f3f8fc14f9fbab5)

Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

2 files changed, 51 insertions, 0 deletions

diff --git a/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-base/CVE-2025-47806.patch b/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-base/CVE-2025-47806.patch
new file mode 100644
index 0000000000..632a5fb38e
--- /dev/null
+++ b/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-base/CVE-2025-47806.patch
@@ -0,0 +1,50 @@
+From da4380c4df0e00f8d0bad569927bfc7ea35ec37d Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
+Date: Thu, 8 May 2025 12:46:40 +0300
+Subject: [PATCH] subparse: Make sure that subrip time string is not too long
+ before zero-padding
+
+Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4419
+Fixes CVE-2025-47806
+
+Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/9135>
+
+CVE: CVE-2025-47806
+Upstream-Status: Backport [https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/da4380c4df0e00f8d0bad569927bfc7ea35ec37d]
+Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
+---
+ gst/subparse/gstsubparse.c | 11 ++++++++++-
+ 1 file changed, 10 insertions(+), 1 deletion(-)
+
+diff --git a/gst/subparse/gstsubparse.c b/gst/subparse/gstsubparse.c
+index 4ea4ec6..035068d 100644
+--- a/gst/subparse/gstsubparse.c
++++ b/gst/subparse/gstsubparse.c
+@@ -850,7 +850,7 @@ parse_subrip_time (const gchar * ts_string, GstClockTime * t)
+   g_strdelimit (s, " ", '0');
+   g_strdelimit (s, ".", ',');
+ 
+-  /* make sure we have exactly three digits after he comma */
++  /* make sure we have exactly three digits after the comma */
+   p = strchr (s, ',');
+   if (p == NULL) {
+     /* If there isn't a ',' the timestamp is broken */
+@@ -859,6 +859,15 @@ parse_subrip_time (const gchar * ts_string, GstClockTime * t)
+     return FALSE;
+   }
+ 
++  /* Check if the comma is too far into the string to avoid
++   * stack overflow when zero-padding the sub-second part.
++   *
++   * Allow for 3 digits of hours just in case. */
++  if ((p - s) > sizeof ("hhh:mm:ss,")) {
++    GST_WARNING ("failed to parse subrip timestamp string '%s'", s);
++    return FALSE;
++  }
++
+   ++p;
+   len = strlen (p);
+   if (len > 3) {
+-- 
+2.50.1
+
diff --git a/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-base_1.22.12.bb b/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-base_1.22.12.bb
index 44ecdc0b55..bfc6bb65ef 100644
--- a/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-base_1.22.12.bb
+++ b/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-base_1.22.12.bb
@@ -20,6 +20,7 @@ SRC_URI = "https://gstreamer.freedesktop.org/src/gst-plugins-base/gst-plugins-ba
            file://0011-discoverer-Don-t-print-channel-layout-for-more-than-.patch \
            file://0012-subparse-Check-for-NULL-return-of-strchr-when-parsin.patch \
            file://CVE-2025-47808.patch \
+           file://CVE-2025-47806.patch \
            "
 SRC_URI[sha256sum] = "73cfadc3a6ffe77ed974cfd6fb391c605e4531f48db21dd6b9f42b8cb69bd8c1"