From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 2/2] avcodec/pnmdec: Use 64bit for input size check
Date: Fri, 19 Jul 2024 00:16:06 +0200
Message-ID: <20240718221606.3710874-2-michael@niedermayer.cc> (raw)
In-Reply-To: <20240718221606.3710874-1-michael@niedermayer.cc>
Fixes: out of array read
Fixes: poc3
Reported-by: VulDB CNA Team
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/pnmdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/pnmdec.c b/libavcodec/pnmdec.c
index a6945549bd5..59013ada495 100644
--- a/libavcodec/pnmdec.c
+++ b/libavcodec/pnmdec.c
@@ -262,7 +262,7 @@ static int pnm_decode_frame(AVCodecContext *avctx, AVFrame *p,
break;
case AV_PIX_FMT_GBRPF32:
if (!s->half) {
- if (avctx->width * avctx->height * 12 > s->bytestream_end - s->bytestream)
+ if (avctx->width * avctx->height * 12LL > s->bytestream_end - s->bytestream)
return AVERROR_INVALIDDATA;
scale = 1.f / s->scale;
if (s->endian) {
--
2.45.2
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next prev parent reply other threads:[~2024-07-18 22:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-18 22:16 [FFmpeg-devel] [PATCH 1/2] avformat/mov: Check extradata in mov_read_iacb() Michael Niedermayer
2024-07-18 22:16 ` Michael Niedermayer [this message]
2024-07-21 12:47 ` [FFmpeg-devel] [PATCH 2/2] avcodec/pnmdec: Use 64bit for input size check Michael Niedermayer
2024-07-18 22:19 ` [FFmpeg-devel] [PATCH 1/2] avformat/mov: Check extradata in mov_read_iacb() James Almer
2024-07-19 8:10 ` Michael Niedermayer
2024-07-19 23:47 ` James Almer
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