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ab884ff9a7
Source: binutils-gdb.git
MR: 73906
Type: Security Fix
Disposition: Backport from binutils-2_29
ChangeID: 13858130a02bbe84744fd33ecbf2bbbd2360c09c
Description:
Fix address violation parsing a corrupt texhex format file.
PR binutils/21670
* tekhex.c (getvalue): Check for the source pointer exceeding the
end pointer before the first byte is read.
Affects: <= 2.28
Author: Nick Clifton <nickc@redhat.com>
(From OE-Core rev: 162fce9416dcde1a0b7edfbf772fa6e6e18c46a4)
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>
59 lines
1.7 KiB
Diff
59 lines
1.7 KiB
Diff
commit 04e15b4a9462cb1ae819e878a6009829aab8020b
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Author: Nick Clifton <nickc@redhat.com>
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Date: Mon Jun 26 15:46:34 2017 +0100
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Fix address violation parsing a corrupt texhex format file.
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PR binutils/21670
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* tekhex.c (getvalue): Check for the source pointer exceeding the
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end pointer before the first byte is read.
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Upstream-Status: Backport
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CVE: CVE-2017-9954
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Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com>
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Index: git/bfd/tekhex.c
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===================================================================
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--- git.orig/bfd/tekhex.c 2017-09-21 16:19:42.570877476 +0530
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+++ git/bfd/tekhex.c 2017-09-21 16:20:06.878964516 +0530
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@@ -273,6 +273,9 @@
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bfd_vma value = 0;
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unsigned int len;
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+ if (src >= endp)
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+ return FALSE;
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+
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if (!ISHEX (*src))
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return FALSE;
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@@ -514,9 +517,10 @@
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/* To the front of the file. */
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if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
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return FALSE;
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+
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while (! is_eof)
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{
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- char src[MAXCHUNK];
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+ static char src[MAXCHUNK];
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char type;
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/* Find first '%'. */
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Index: git/bfd/ChangeLog
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===================================================================
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--- git.orig/bfd/ChangeLog 2017-09-21 16:20:06.822964309 +0530
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+++ git/bfd/ChangeLog 2017-09-21 16:22:29.383577439 +0530
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@@ -55,6 +55,12 @@
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correct magic bytes at the start, set the error to wrong format
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and clear the format selector before returning NULL.
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+2017-06-26 Nick Clifton <nickc@redhat.com>
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+
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+ PR binutils/21670
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+ * tekhex.c (getvalue): Check for the source pointer exceeding the
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+ end pointer before the first byte is read.
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+
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2017-06-21 Nick Clifton <nickc@redhat.com>
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PR binutils/21637
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