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43 lines
1.4 KiB
43 lines
1.4 KiB
From 4d463048b9f27a3dc86b7010c198b32d995cd941 Mon Sep 17 00:00:00 2001
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From: Debarshi Ray <debarshir@gnome.org>
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Date: Tue, 27 Apr 2021 17:44:09 +0200
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Subject: [PATCH] Limit loops to MIN(colors,4)
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This is a backport of commit 4feaed4dea636cee for CVE-2020-24870.
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https://github.com/LibRaw/LibRaw/issues/330
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---
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internal/dcraw_common.cpp | 9 +++++----
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1 file changed, 5 insertions(+), 4 deletions(-)
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diff --git a/internal/dcraw_common.cpp b/internal/dcraw_common.cpp
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index a36553208194..3e8c009eb08e 100644
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--- a/internal/dcraw_common.cpp
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+++ b/internal/dcraw_common.cpp
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@@ -19598,17 +19598,18 @@ dng_skip:
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if(calidx[colidx] == sidx)
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{
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- for (int i = 0; i < colors; i++)
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+ for (int i = 0; i < colors && i < 4; i++)
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FORCC
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cc[i][c] = tiff_ifd[sidx].dng_color[colidx].calibration[i][c];
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}
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if(abidx == sidx)
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- for (int i = 0; i < colors; i++)
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+ for (int i = 0; i < colors && i < 4; i++)
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FORCC cc[i][c] *= tiff_ifd[sidx].dng_levels.analogbalance[i];
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int j;
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- FORCC for (int i = 0; i < 3; i++) for (cam_xyz[c][i] = j = 0; j < colors; j++) cam_xyz[c][i] +=
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- cc[c][j] * cm[j][i];// add AsShotXY later * xyz[i];
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+ FORCC for (int i = 0; i < 3; i++)
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+ for (cam_xyz[c][i] = j = 0; j < colors && j < 4; j++)
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+ cam_xyz[c][i] += cc[c][j] * cm[j][i];// add AsShotXY later * xyz[i];
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cam_xyz_coeff(cmatrix, cam_xyz);
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}
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}
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--
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2.30.2
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