c5327efb97
* gnu/packages/patches/libvpx-use-after-free-in-postproc.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it. * gnu/packages/video.scm (libvpx)[source]: Add patch.
35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
From 52add5896661d186dec284ed646a4b33b607d2c7 Mon Sep 17 00:00:00 2001
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From: Jerome Jiang <jianj@google.com>
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Date: Wed, 23 May 2018 15:43:00 -0700
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Subject: [PATCH] VP8: Fix use-after-free in postproc.
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The pointer in vp8 postproc refers to show_frame_mi which is only
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updated on show frame. However, when there is a no-show frame which also
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changes the size (thus new frame buffers allocated), show_frame_mi is
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not updated with new frame buffer memory.
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Change the pointer in postproc to mi which is always updated.
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Bug: 842265
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Change-Id: I33874f2112b39f74562cba528432b5f239e6a7bd
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---
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vp8/common/postproc.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/vp8/common/postproc.c b/vp8/common/postproc.c
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index d67ee8a57..8c292d616 100644
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--- a/vp8/common/postproc.c
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+++ b/vp8/common/postproc.c
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@@ -65,7 +65,7 @@ void vp8_deblock(VP8_COMMON *cm, YV12_BUFFER_CONFIG *source,
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double level = 6.0e-05 * q * q * q - .0067 * q * q + .306 * q + .0065;
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int ppl = (int)(level + .5);
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- const MODE_INFO *mode_info_context = cm->show_frame_mi;
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+ const MODE_INFO *mode_info_context = cm->mi;
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int mbr, mbc;
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/* The pixel thresholds are adjusted according to if or not the macroblock
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--
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2.19.0
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