ffmpeg | branch: release/4.2 | Michael Niedermayer <[email protected]> | Sun May 31 14:59:02 2020 +0200| [7991001f9d5cb8ac07d41f7d9c3ce2b470b9e96d] | committer: Michael Niedermayer
avcodec/adpcm: XA: Check shift similar to filter 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 <[email protected]> (cherry picked from commit 6d96bae9c480e020e9f51fabd5642d7ae6020943) Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7991001f9d5cb8ac07d41f7d9c3ce2b470b9e96d --- libavcodec/adpcm.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c index 63c307c0e6..651164301c 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -426,6 +426,10 @@ 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]; @@ -451,10 +455,14 @@ 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]; _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
