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Git pushed a commit to branch master
in repository ffmpeg.
The following commit(s) were added to refs/heads/master by this push:
new b99c6fc8c3 avformat/dashdec: Fail with any inner stream count being 0
b99c6fc8c3 is described below
commit b99c6fc8c362062f00f1eafd763d4449ad2ad512
Author: Michael Niedermayer <[email protected]>
AuthorDate: Sat May 16 20:35:11 2026 +0200
Commit: michaelni <[email protected]>
CommitDate: Sat Jun 6 17:29:17 2026 +0000
avformat/dashdec: Fail with any inner stream count being 0
Fixes: ada-3-poc.mpd
Found-by: Claude and Ada Logics. This issue was found by Anthropic from
using agents to study security of open source projects, and I am from Ada
Logics helping validate the found issues and report to maintainers.
Signed-off-by: Michael Niedermayer <[email protected]>
---
libavformat/dashdec.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/libavformat/dashdec.c b/libavformat/dashdec.c
index 8536bb6575..4cfc871ad4 100644
--- a/libavformat/dashdec.c
+++ b/libavformat/dashdec.c
@@ -2173,6 +2173,8 @@ static int dash_read_header(AVFormatContext *s)
if (ret)
return ret;
+ if (rep->ctx->nb_streams == 0)
+ return AVERROR_PATCHWELCOME;
stream_index += rep->ctx->nb_streams;
}
@@ -2191,6 +2193,8 @@ static int dash_read_header(AVFormatContext *s)
if (ret)
return ret;
+ if (rep->ctx->nb_streams == 0)
+ return AVERROR_PATCHWELCOME;
stream_index += rep->ctx->nb_streams;
}
@@ -2209,6 +2213,8 @@ static int dash_read_header(AVFormatContext *s)
if (ret)
return ret;
+ if (rep->ctx->nb_streams == 0)
+ return AVERROR_PATCHWELCOME;
stream_index += rep->ctx->nb_streams;
}
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