mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/bintext: sanity check dimensions
Fixes: Timeout Fixes: 6277/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_XBIN_fuzzer-6047202288861184 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -35,6 +35,8 @@
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#include "bintext.h"
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#include "bintext.h"
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#include "internal.h"
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#include "internal.h"
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#define FONT_WIDTH 8
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typedef struct XbinContext {
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typedef struct XbinContext {
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AVFrame *frame;
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AVFrame *frame;
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int palette[16];
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int palette[16];
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@ -91,6 +93,9 @@ static av_cold int decode_init(AVCodecContext *avctx)
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break;
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break;
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}
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}
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}
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}
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if (avctx->width < FONT_WIDTH || avctx->height < s->font_height)
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return AVERROR_INVALIDDATA;
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s->frame = av_frame_alloc();
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s->frame = av_frame_alloc();
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if (!s->frame)
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if (!s->frame)
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@ -113,8 +118,6 @@ av_unused static void hscroll(AVCodecContext *avctx)
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}
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}
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}
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}
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#define FONT_WIDTH 8
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/**
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/**
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* Draw character to screen
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* Draw character to screen
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*/
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*/
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