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[binutils-gdb/binutils-2_30-branch] Import patch from mainline to fix possible seg-fault whilst parsing corrupt ELF notes with extravage
- From: Nick Clifton <nickc at sourceware dot org>
- To: bfd-cvs at sourceware dot org
- Date: 9 Feb 2018 09:29:34 -0000
- Subject: [binutils-gdb/binutils-2_30-branch] Import patch from mainline to fix possible seg-fault whilst parsing corrupt ELF notes with extravage
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d895ef77ffc94e02e748856c2ab54f5bb8cc867e
commit d895ef77ffc94e02e748856c2ab54f5bb8cc867e
Author: Nick Clifton <nickc@redhat.com>
Date: Fri Feb 9 09:28:45 2018 +0000
Import patch from mainline to fix possible seg-fault whilst parsing corrupt ELF notes with extravagent alignments.
PR 22788
* elf.c (elf_parse_notes): Reject notes with excessuively large
alignments.
Diff:
---
bfd/ChangeLog | 9 +++++++++
bfd/elf.c | 2 ++
2 files changed, 11 insertions(+)
diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index bff6158..3cf9578 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,12 @@
+2018-02-09 Nick Clifton <nickc@redhat.com>
+
+ Import patch from mainline:
+ 2018-02-08 Nick Clifton <nickc@redhat.com>
+
+ PR 22788
+ * elf.c (elf_parse_notes): Reject notes with excessuively large
+ alignments.
+
2018-02-07 Alan Modra <amodra@gmail.com>
Revert 2018-01-17 Alan Modra <amodra@gmail.com>
diff --git a/bfd/elf.c b/bfd/elf.c
index 90aef09..c132098 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -11019,6 +11019,8 @@ elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset,
align is less than 4, we use 4 byte alignment. */
if (align < 4)
align = 4;
+ if (align != 4 && align != 8)
+ return FALSE;
p = buf;
while (p < buf + size)