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avcodec/ratecontrol: check the fcode and bcode of the 2-pass log

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Fixes: out of array access
Fixes: DY618nKRv9YY
Found during triage of the review of https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24758
Out of array access Replicated through UnModified FFmpeg with ASAN
This commit is contained in:
Michael Niedermayer
2026-10-12 02:07:46 +02:00
committed by michaelni
parent 863ca906a1
commit 4faaf2e9b8
1 changed files with 5 additions and 0 deletions
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5
libavcodec/ratecontrol.c
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@@ -635,6 +635,11 @@ av_cold int ff_rate_control_init(MPVMainEncContext *const m)
rce->pict_type, i);
return -1;
}
if ((unsigned)rce->f_code > MAX_FCODE || (unsigned)rce->b_code > MAX_FCODE) {
av_log(avctx, AV_LOG_ERROR, "invalid fcode %d / bcode %d at line %d\n",
rce->f_code, rce->b_code, i);
return -1;
}
p = next;
}