ffmpeg | branch: release/2.8 | Michael Niedermayer <mich...@niedermayer.cc> | Fri Jul 19 19:21:41 2024 +0200| [a9db4fc7e11df072423a5cce5eec70cfdd1dd832] | committer: Michael Niedermayer
avcodec/proresdec: Consider negative bits left Fixes: 70036/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PRORES_fuzzer-6298797647396864 Fixes: shift exponent 40 is too large for 32-bit type 'uint32_t' (aka 'unsigned int') Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 419eee63565f81aca67b29582297841c59deaab8) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a9db4fc7e11df072423a5cce5eec70cfdd1dd832 --- libavcodec/proresdec2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/proresdec2.c b/libavcodec/proresdec2.c index 3b21849466..f2d2fffbf6 100644 --- a/libavcodec/proresdec2.c +++ b/libavcodec/proresdec2.c @@ -335,7 +335,7 @@ static av_always_inline int decode_ac_coeffs(AVCodecContext *avctx, GetBitContex for (pos = block_mask;;) { bits_left = gb->size_in_bits - re_index; - if (!bits_left || (bits_left < 32 && !SHOW_UBITS(re, gb, bits_left))) + if (bits_left <= 0 || (bits_left < 32 && !SHOW_UBITS(re, gb, bits_left))) break; DECODE_CODEWORD(run, run_to_cb[FFMIN(run, 15)]); _______________________________________________ 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".
