Fixes: negative shift Fixes: 22499/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ADPCM_XA_fuzzer-5765452130418688
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/adpcm.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c index dc4a9222af..79c5d625d1 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -559,6 +559,10 @@ static int xa_decode(AVCodecContext *avctx, int16_t *out0, int16_t *out1, avpriv_request_sample(avctx, "unknown XA-ADPCM filter %d", filter); filter=0; } + if (shift < 0) { + avpriv_request_sample(avctx, "unknown XA-ADPCM shift %d", shift); + shift = 0; + } f0 = xa_adpcm_table[filter][0]; f1 = xa_adpcm_table[filter][1]; @@ -584,10 +588,14 @@ static int xa_decode(AVCodecContext *avctx, int16_t *out0, int16_t *out1, shift = 12 - (in[5+i*2] & 15); filter = in[5+i*2] >> 4; - if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table)) { + if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table) || shift < 0) { avpriv_request_sample(avctx, "unknown XA-ADPCM filter %d", filter); filter=0; } + if (shift < 0) { + avpriv_request_sample(avctx, "unknown XA-ADPCM shift %d", shift); + shift = 0; + } f0 = xa_adpcm_table[filter][0]; f1 = xa_adpcm_table[filter][1]; -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
