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CVE: CVE-2017-7209 [BZ 21135] -- https://sourceware.org/bugzilla/show_bug.cgi?id=21135 PR binutils/21135: Fix invalid read of section contents whilst processing a corrupt binary. (From OE-Core rev: fd7a91e2a6db1fb806c57c137f72efcffbf1f26b) Signed-off-by: Yuanjie Huang <yuanjie.huang@windriver.com> Signed-off-by: Armin Kuster <akuster808@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
64 lines
1.7 KiB
Diff
64 lines
1.7 KiB
Diff
From 6e5e9d96b5bd7dc3147db9917d6a7a20682915cc Mon Sep 17 00:00:00 2001
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From: Nick Clifton <nickc@redhat.com>
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Date: Mon, 13 Feb 2017 15:04:37 +0000
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Subject: Fix invalid read of section contents whilst processing a corrupt
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binary.
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PR binutils/21135
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* readelf.c (dump_section_as_bytes): Handle the case where
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uncompress_section_contents returns false.
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CVE: CVE-2017-7209
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Upstream-Status: Backport[master]
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Signed-off-by: Yuanjie Huang <yuanjie.huang@windriver.com>
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---
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binutils/ChangeLog | 6 ++++++
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binutils/readelf.c | 16 ++++++++++++----
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2 files changed, 18 insertions(+), 4 deletions(-)
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diff --git a/binutils/ChangeLog b/binutils/ChangeLog
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index 55d2f8ba40..c4d8e60eca 100644
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--- a/binutils/ChangeLog
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+++ b/binutils/ChangeLog
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@@ -1,3 +1,9 @@
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+2017-02-13 Nick Clifton <nickc@redhat.com>
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+
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+ PR binutils/21135
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+ * readelf.c (dump_section_as_bytes): Handle the case where
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+ uncompress_section_contents returns false.
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+
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2017-02-20 Nick Clifton <nickc@redhat.com>
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PR binutils/21156
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diff --git a/binutils/readelf.c b/binutils/readelf.c
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index 7f7365dbc5..bc4e92fa81 100644
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--- a/binutils/readelf.c
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+++ b/binutils/readelf.c
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@@ -12473,10 +12473,18 @@ dump_section_as_bytes (Elf_Internal_Shdr * section,
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new_size -= 12;
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}
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- if (uncompressed_size
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- && uncompress_section_contents (& start, uncompressed_size,
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- & new_size))
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- section_size = new_size;
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+ if (uncompressed_size)
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+ {
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+ if (uncompress_section_contents (& start, uncompressed_size,
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+ & new_size))
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+ section_size = new_size;
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+ else
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+ {
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+ error (_("Unable to decompress section %s\n"),
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+ printable_section_name (section));
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+ return;
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+ }
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+ }
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}
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if (relocate)
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--
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2.11.0
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