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00a04d8d8b
Affected: <= 2.29.1 (From OE-Core rev: c19aa7eafd38639095b415efc16dba3777507d70) Signed-off-by: Armin Kuster <akuster@mvista.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
62 lines
1.6 KiB
Diff
62 lines
1.6 KiB
Diff
From 11855d8a1f11b102a702ab76e95b22082cccf2f8 Mon Sep 17 00:00:00 2001
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From: Alan Modra <amodra@gmail.com>
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Date: Mon, 25 Sep 2017 19:46:34 +0930
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Subject: [PATCH] PR22201, DW_AT_name with out of bounds reference
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DW_AT_name ought to always have a string value.
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PR 22201
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* dwarf2.c (scan_unit_for_symbols): Ignore DW_AT_name unless it
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has string form.
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(parse_comp_unit): Likewise.
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Upstream-Status: Backport
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Affects: <= 2.29.1
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CVE: CVE-2017-15022
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Signed-off-by: Armin Kuster <akuster@mvista.com>
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---
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bfd/ChangeLog | 7 +++++++
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bfd/dwarf2.c | 6 ++++--
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2 files changed, 11 insertions(+), 2 deletions(-)
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Index: git/bfd/dwarf2.c
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===================================================================
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--- git.orig/bfd/dwarf2.c
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+++ git/bfd/dwarf2.c
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@@ -3177,7 +3177,8 @@ scan_unit_for_symbols (struct comp_unit
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switch (attr.name)
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{
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case DW_AT_name:
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- var->name = attr.u.str;
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+ if (is_str_attr (attr.form))
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+ var->name = attr.u.str;
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break;
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case DW_AT_decl_file:
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@@ -3429,7 +3430,8 @@ parse_comp_unit (struct dwarf2_debug *st
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break;
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case DW_AT_name:
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- unit->name = attr.u.str;
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+ if (is_str_attr (attr.form))
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+ unit->name = attr.u.str;
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break;
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case DW_AT_low_pc:
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Index: git/bfd/ChangeLog
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===================================================================
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--- git.orig/bfd/ChangeLog
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+++ git/bfd/ChangeLog
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@@ -1,3 +1,10 @@
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+2017-09-25 Alan Modra <amodra@gmail.com>
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+
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+ PR 22201
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+ * dwarf2.c (scan_unit_for_symbols): Ignore DW_AT_name unless it
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+ has string form.
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+ (parse_comp_unit): Likewise.
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+
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2017-09-24 Alan Modra <amodra@gmail.com>
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PR 22197
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