File ffmpeg-CVE-2024-36617.patch of Package ffmpeg.39878

commit d973fcbcc2f944752ff10e6a76b0b2d9329937a7
Author: Michael Niedermayer <michael@niedermayer.cc>
Date:   Sat Sep 30 00:38:17 2023 +0200

    avformat/cafdec: dont seek beyond 64bit
    
    Fixes: signed integer overflow: 64 + 9223372036854775807 cannot be represented in type 'long long'
    Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-6418242730328064
    Fixes: 62276/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-6418242730328064
    
    Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
    Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

--- a/libavformat/cafdec.c
+++ b/libavformat/cafdec.c
@@ -209,7 +209,7 @@
         st->duration += caf->frames_per_packet ? caf->frames_per_packet : ff_mp4_read_descr_len(pb);
     }
 
-    if (avio_tell(pb) - ccount > size) {
+    if (avio_tell(pb) - ccount > size || size > INT64_MAX - ccount) {
         av_log(s, AV_LOG_ERROR, "error reading packet table\n");
         return AVERROR_INVALIDDATA;
     }