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1c106ae64a
Backport the CVE patches from the upstream: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git; h=30838132997e6a3cfe3ec11c58b32b22f6f6b102 h=cf93e9c2cf8f8b2566f8fc86e961592b51b5980d [BZ 23686] https://sourceware.org/bugzilla/show_bug.cgi?id=23686 [BZ 23685] https://sourceware.org/bugzilla/show_bug.cgi?id=23685 The one is for CVE-2018-17358 and CVE-2018-17359, and the another is for CVE-2018-17360. (From OE-Core rev: 2683d8287d6878868d3aa15ce6e6a80ce28d8737) Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
66 lines
2.2 KiB
Diff
66 lines
2.2 KiB
Diff
From cf93e9c2cf8f8b2566f8fc86e961592b51b5980d Mon Sep 17 00:00:00 2001
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From: Alan Modra <amodra@gmail.com>
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Date: Thu, 20 Sep 2018 18:23:17 +0930
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Subject: [PATCH] PR23685, buffer overflow
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PR 23685
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* peXXigen.c (pe_print_edata): Correct export address table
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overflow checks. Check dataoff against section size too.
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CVE: CVE-2018-17360
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Upstream-Status: Backport
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Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com>
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---
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bfd/ChangeLog | 6 ++++++
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bfd/peXXigen.c | 11 ++++++-----
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2 files changed, 12 insertions(+), 5 deletions(-)
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diff --git a/bfd/ChangeLog b/bfd/ChangeLog
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index fef5479..81b9e56 100644
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--- a/bfd/ChangeLog
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+++ b/bfd/ChangeLog
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@@ -1,5 +1,11 @@
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2018-09-20 Alan Modra <amodra@gmail.com>
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+ PR 23685
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+ * peXXigen.c (pe_print_edata): Correct export address table
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+ overflow checks. Check dataoff against section size too.
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+
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+2018-09-20 Alan Modra <amodra@gmail.com>
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+
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PR 23686
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* dwarf2.c (read_section): Error when attempting to malloc
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"(bfd_size_type) -1".
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diff --git a/bfd/peXXigen.c b/bfd/peXXigen.c
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index 598f2ca..1645ef4 100644
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--- a/bfd/peXXigen.c
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+++ b/bfd/peXXigen.c
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@@ -1661,7 +1661,8 @@ pe_print_edata (bfd * abfd, void * vfile)
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dataoff = addr - section->vma;
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datasize = extra->DataDirectory[PE_EXPORT_TABLE].Size;
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- if (datasize > section->size - dataoff)
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+ if (dataoff > section->size
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+ || datasize > section->size - dataoff)
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{
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fprintf (file,
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_("\nThere is an export table in %s, but it does not fit into that section\n"),
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@@ -1778,11 +1779,11 @@ pe_print_edata (bfd * abfd, void * vfile)
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edt.base);
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/* PR 17512: Handle corrupt PE binaries. */
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- if (edt.eat_addr + (edt.num_functions * 4) - adj >= datasize
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+ /* PR 17512 file: 140-165018-0.004. */
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+ if (edt.eat_addr - adj >= datasize
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/* PR 17512: file: 092b1829 */
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- || (edt.num_functions * 4) < edt.num_functions
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- /* PR 17512 file: 140-165018-0.004. */
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- || data + edt.eat_addr - adj < data)
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+ || (edt.num_functions + 1) * 4 < edt.num_functions
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+ || edt.eat_addr - adj + (edt.num_functions + 1) * 4 > datasize)
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fprintf (file, _("\tInvalid Export Address Table rva (0x%lx) or entry count (0x%lx)\n"),
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(long) edt.eat_addr,
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(long) edt.num_functions);
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--
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2.9.3
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