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new c9b1c355e0 avcodec/librav1e: pass the remaining stats size to
rav1e_twopass_in()
c9b1c355e0 is described below
commit c9b1c355e008fe8449228ae86f17178b3c32b30c
Author: Hongduo Zhao <[email protected]>
AuthorDate: Tue Sep 29 01:57:32 2026 +0200
Commit: michaelni <[email protected]>
CommitDate: Sat Oct 3 21:12:15 2026 +0000
avcodec/librav1e: pass the remaining stats size to rav1e_twopass_in()
Fixes: heap out of array read in rav1e with a truncated pass-2 log
Fixes: c2jCdj0i7WcP
Found-by: Hongduo Zhao
Replicated through UnModified FFmpeg
---
libavcodec/librav1e.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libavcodec/librav1e.c b/libavcodec/librav1e.c
index 0db80830d8..785e9e91ea 100644
--- a/libavcodec/librav1e.c
+++ b/libavcodec/librav1e.c
@@ -161,7 +161,8 @@ static int set_stats(AVCodecContext *avctx)
int ret = 1;
while (ret > 0 && ctx->pass_size - ctx->pass_pos > 0) {
- ret = rav1e_twopass_in(ctx->ctx, ctx->pass_data + ctx->pass_pos,
ctx->pass_size);
+ ret = rav1e_twopass_in(ctx->ctx, ctx->pass_data + ctx->pass_pos,
+ ctx->pass_size - ctx->pass_pos);
if (ret < 0)
return AVERROR_EXTERNAL;
ctx->pass_pos += ret;
--
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