ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu Nov 30 02:36:41 2023 +0100| [22daf2148fc072f8f347af939f88b3af7896ab60] | committer: Michael Niedermayer
avcodec/av1dec: Fix resolving zero divisor Fixes: Out of array read Fixes: global-buffer-overflow-AV1 Found-by: "Leonelli, Matteo" <matteo.leone...@cispa.de> Tested-by: "Wang, Fei W" <fei.w.w...@intel.com> Reviewed-by: "Wang, Fei W" <fei.w.w...@intel.com> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=22daf2148fc072f8f347af939f88b3af7896ab60 --- libavcodec/av1dec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/av1dec.c b/libavcodec/av1dec.c index 6114cb78e6..4dcde234c6 100644 --- a/libavcodec/av1dec.c +++ b/libavcodec/av1dec.c @@ -177,7 +177,7 @@ static uint8_t get_shear_params_valid(AV1DecContext *s, int idx) int16_t alpha, beta, gamma, delta, divf, divs; int64_t v, w; int32_t *param = &s->cur_frame.gm_params[idx][0]; - if (param[2] < 0) + if (param[2] <= 0) return 0; alpha = av_clip_int16(param[2] - (1 << AV1_WARPEDMODEL_PREC_BITS)); _______________________________________________ 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".
