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[FFmpeg-devel,5/5] avformat/rdt: Check pkt_len

Message ID 20240607003215.1723906-5-michael@niedermayer.cc
State New
Headers show
Series [FFmpeg-devel,1/5] avformat/mov: Check requested_sample before using it | expand

Checks

Context Check Description
andriy/make_x86 success Make finished
andriy/make_fate_x86 success Make fate finished

Commit Message

Michael Niedermayer June 7, 2024, 12:32 a.m. UTC 
Fixes: CID1473553 Untrusted loop bound

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/rdt.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/libavformat/rdt.c b/libavformat/rdt.c
index 60449d256a5..2fa53d34a8d 100644
--- a/libavformat/rdt.c
+++ b/libavformat/rdt.c
@@ -206,6 +206,8 @@  ff_rdt_parse_header(const uint8_t *buf, int len,
             return -1; /* not followed by a data packet */
 
         pkt_len = AV_RB16(buf+3);
+        if (pkt_len > len)
+            return AVERROR_INVALIDDATA;
         buf += pkt_len;
         len -= pkt_len;
         consumed += pkt_len;