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f98a25139e
Source: git://sourceware.org/git/binutils-gdb.git
MR: 74114
Type: Security Fix
Disposition: Backport from binutils-2_29
ChangeID: d55e7590c08c4db483bba2fa35df8fbb6283686e
Description:
Fix a seg-fault when processing a corrupt binary containing reloc(s) with negative addresses.
PR binutils/21434
* reloc.c (bfd_perform_relocation): Check for a negative address
in the reloc.
Affects: <= 2.29
Author: Nick Clifton <nickc@redhat.com>
(From OE-Core rev: 6dd9179c4208c8d13f7e9c784d9993606416ab97)
Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com>
Reviewed-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
51 lines
1.8 KiB
Diff
51 lines
1.8 KiB
Diff
commit 04b31182bf3f8a1a76e995bdfaaaab4c009b9cb2
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Author: Nick Clifton <nickc@redhat.com>
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Date: Wed Apr 26 16:30:22 2017 +0100
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Fix a seg-fault when processing a corrupt binary containing reloc(s) with negative addresses.
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PR binutils/21434
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* reloc.c (bfd_perform_relocation): Check for a negative address
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in the reloc.
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Upstream-Status: Backport
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CVE: CVE-2017-8397
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Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com>
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Index: git/bfd/reloc.c
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===================================================================
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--- git.orig/bfd/reloc.c 2017-09-04 18:06:00.651987605 +0530
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+++ git/bfd/reloc.c 2017-09-04 18:06:10.740066291 +0530
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@@ -623,7 +623,10 @@
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PR 17512: file: c146ab8b, 46dff27f, 38e53ebf. */
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octets = reloc_entry->address * bfd_octets_per_byte (abfd);
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if (octets + bfd_get_reloc_size (howto)
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- > bfd_get_section_limit_octets (abfd, input_section))
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+ > bfd_get_section_limit_octets (abfd, input_section)
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+ /* Check for an overly large offset which
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+ masquerades as a negative value too. */
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+ || (octets + bfd_get_reloc_size (howto) < bfd_get_reloc_size (howto)))
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return bfd_reloc_outofrange;
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/* Work out which section the relocation is targeted at and the
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Index: git/bfd/ChangeLog
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===================================================================
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--- git.orig/bfd/ChangeLog 2017-09-04 18:06:10.684065855 +0530
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+++ git/bfd/ChangeLog 2017-09-04 18:08:33.845183050 +0530
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@@ -75,6 +75,12 @@
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2017-04-26 Nick Clifton <nickc@redhat.com>
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+ PR binutils/21434
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+ * reloc.c (bfd_perform_relocation): Check for a negative address
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+ in the reloc.
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+
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+2017-04-26 Nick Clifton <nickc@redhat.com>
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+
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PR binutils/21431
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* compress.c (bfd_init_section_compress_status): Check the return
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value from bfd_malloc.
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