ffmpeg: fix CVE-2024-36613

FFmpeg n6.1.1 has a vulnerability in the DXA demuxer of the libavformat library
allowing for an integer overflow, potentially resulting in a denial-of-service (DoS)
condition or other undefined behavior.

Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2024-36613.patch b/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2024-36613.patch
new file mode 100644 (file)
index 0000000..300b8d1
--- /dev/null
+++ b/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2024-36613.patch
@@ -0,0 +1,38 @@
+From 1f6fcc64179377114b4ecc3b9f63bd5774a64edf Mon Sep 17 00:00:00 2001
+From: Michael Niedermayer <michael@niedermayer.cc>
+Date: Sat, 30 Sep 2023 00:51:29 +0200
+Subject: [PATCH 2/4] avformat/dxa: Adjust order of operations around block
+ align
+
+Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_DXA_fuzzer-5730576523198464
+Fixes: signed integer overflow: 2147483566 + 82 cannot be represented in type 'int'
+
+Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
+Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
+(cherry picked from commit 50d8e4f27398fd5778485a827d7a2817921f8540)
+Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
+
+CVE: CVE-2024-36613
+
+Upstream-Status: Backport [https://github.com/ffmpeg/ffmpeg/commit/1f6fcc64179377114b4ecc3b9f63bd5774a64edf]
+
+Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
+---
+ libavformat/dxa.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/libavformat/dxa.c b/libavformat/dxa.c
+index 16fbb08..53747c8 100644
+--- a/libavformat/dxa.c
++++ b/libavformat/dxa.c
+@@ -120,7 +120,7 @@ static int dxa_read_header(AVFormatContext *s)
+         }
+         c->bpc = (fsize + c->frames - 1) / c->frames;
+         if(ast->codecpar->block_align)
+-            c->bpc = ((c->bpc + ast->codecpar->block_align - 1) / ast->codecpar->block_align) * ast->codecpar->block_align;
++            c->bpc = ((c->bpc - 1 + ast->codecpar->block_align) / ast->codecpar->block_align) * ast->codecpar->block_align;
+         c->bytes_left = fsize;
+         c->wavpos = avio_tell(pb);
+         avio_seek(pb, c->vidpos, SEEK_SET);
+--
+2.40.0

diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg_5.0.1.bb b/meta/recipes-multimedia/ffmpeg/ffmpeg_5.0.1.bb
index 049d9fd9ec80f8f11f3e265a65b2780d1482ef4a..91259baa5ea70fe693a3d80fa38070278d563acc 100644 (file)
--- a/meta/recipes-multimedia/ffmpeg/ffmpeg_5.0.1.bb
+++ b/meta/recipes-multimedia/ffmpeg/ffmpeg_5.0.1.bb
@@ -44,6 +44,7 @@ SRC_URI = "https://www.ffmpeg.org/releases/${BP}.tar.xz \
            file://CVE-2024-35367.patch \
            file://CVE-2024-35368.patch \
            file://CVE-2025-0518.patch \
+           file://CVE-2024-36613.patch \
           "
 
 SRC_URI[sha256sum] = "ef2efae259ce80a240de48ec85ecb062cecca26e4352ffb3fda562c21a93007b"