ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu Jun 19 05:04:30 2025 +0200| [3afae0f4409ace1699ebe3fdd32a61f05657c09f] | committer: Michael Niedermayer
avcodec/sanm: Check w, h for subversion < 2 Fixes: 410609432/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SANM_fuzzer-4935159201988608 Fixes: out of array access Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Manuel Lauss <manuel.la...@gmail.com> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3afae0f4409ace1699ebe3fdd32a61f05657c09f --- libavcodec/sanm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/sanm.c b/libavcodec/sanm.c index 642ef02bff..02bb78859a 100644 --- a/libavcodec/sanm.c +++ b/libavcodec/sanm.c @@ -1670,6 +1670,8 @@ static int process_frame_obj(SANMVideoContext *ctx, GetByteContext *gb) /* Rebel Assault 1: 384x242 internal size */ xres = 384; yres = 242; + if (w > xres || h > yres) + return AVERROR_INVALIDDATA; ctx->have_dimensions = 1; } else if (codec == 37 || codec == 47 || codec == 48) { /* these codecs work on full frames, trust their dimensions */ _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
