From 8301a21773ef61656225e264f4f06ae14462bca7 Mon Sep 17 00:00:00 2001
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From: Jasper Lievisse Adriaanse <j@jasper.la>
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Date: Fri, 26 Feb 2021 15:21:20 +0100
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Subject: [PATCH] Fix potential memory corruption with negative memmove() size
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Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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---
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lib/lz4.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/lib/lz4.c b/lib/lz4.c
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index 5f524d0..c2f504e 100644
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--- a/lib/lz4.c
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+++ b/lib/lz4.c
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@@ -1749,7 +1749,7 @@ LZ4_decompress_generic(
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const size_t dictSize /* note : = 0 if noDict */
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)
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{
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- if (src == NULL) { return -1; }
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+ if ((src == NULL) || (outputSize < 0)) { return -1; }
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{ const BYTE* ip = (const BYTE*) src;
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const BYTE* const iend = ip + srcSize;
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--
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2.20.1
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