PR #20354 opened by michaelni URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20354 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20354.patch
Fixes: out of array read Fixes: 441131173/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_DEC_fuzzer-6700429212975104 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> >From a03941944dfd74d1869ee92d650fcaabe6c8092a Mon Sep 17 00:00:00 2001 From: Michael Niedermayer <[email protected]> Date: Wed, 27 Aug 2025 15:00:56 +0200 Subject: [PATCH] avcodec/exif: also copy zero termination for AV_TIFF_STRING Fixes: out of array read Fixes: 441131173/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_DEC_fuzzer-6700429212975104 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> --- libavcodec/exif.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/libavcodec/exif.c b/libavcodec/exif.c index f7effa6dbd..2ac54e51af 100644 --- a/libavcodec/exif.c +++ b/libavcodec/exif.c @@ -993,7 +993,11 @@ static int exif_clone_entry(AVExifEntry *dst, const AVExifEntry *src) EXIF_COPY(dst->value.sbytes, src->value.sbytes); break; case AV_TIFF_STRING: - EXIF_COPY(dst->value.str, src->value.str); + dst->value.str = av_memdup(src->value.str, src->count+1); + if (!dst->value.str) { + ret = AVERROR(ENOMEM); + goto end; + } break; } -- 2.49.1 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
