29 lines
784 B
Diff
29 lines
784 B
Diff
From cedb7ba568161021bc2f2f48af95fcf33e262f77 Mon Sep 17 00:00:00 2001
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From: Lumir Balhar <lbalhar@redhat.com>
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Date: Mon, 14 Jun 2021 09:30:01 +0200
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Subject: [PATCH 4/5] CVE-2021-28676
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---
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src/libImaging/FliDecode.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/src/libImaging/FliDecode.c b/src/libImaging/FliDecode.c
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index 72ba138..9181b8b 100644
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--- a/src/libImaging/FliDecode.c
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+++ b/src/libImaging/FliDecode.c
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@@ -209,6 +209,11 @@ ImagingFliDecode(Imaging im, ImagingCodecState state, UINT8* buf, int bytes)
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return -1;
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}
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advance = I32(ptr);
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+ if (advance == 0 ) {
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+ // If there's no advance, we're in in infinite loop
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+ state->errcode = IMAGING_CODEC_BROKEN;
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+ return -1;
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+ }
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ptr += advance;
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bytes -= advance;
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}
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--
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2.31.1
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