libxslt: add upstream security fix
Fixes CVE-2016-4738 - heap overread. https://www.debian.org/security/2016/dsa-3709 Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
parent
d9a6d70283
commit
3ded6e5e39
|
@ -0,0 +1,35 @@
|
||||||
|
From eb1030de31165b68487f288308f9d1810fed6880 Mon Sep 17 00:00:00 2001
|
||||||
|
From: Nick Wellnhofer <wellnhofer@aevum.de>
|
||||||
|
Date: Fri, 10 Jun 2016 14:23:58 +0200
|
||||||
|
Subject: [PATCH] Fix heap overread in xsltFormatNumberConversion
|
||||||
|
|
||||||
|
An empty decimal-separator could cause a heap overread. This can be
|
||||||
|
exploited to leak a couple of bytes after the buffer that holds the
|
||||||
|
pattern string.
|
||||||
|
|
||||||
|
Found with afl-fuzz and ASan.
|
||||||
|
|
||||||
|
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
|
||||||
|
---
|
||||||
|
Patch status: upstream commit eb1030de311
|
||||||
|
|
||||||
|
libxslt/numbers.c | 3 ++-
|
||||||
|
1 file changed, 2 insertions(+), 1 deletion(-)
|
||||||
|
|
||||||
|
diff --git a/libxslt/numbers.c b/libxslt/numbers.c
|
||||||
|
index d1549b46ca26..e78c46b6357b 100644
|
||||||
|
--- a/libxslt/numbers.c
|
||||||
|
+++ b/libxslt/numbers.c
|
||||||
|
@@ -1090,7 +1090,8 @@ xsltFormatNumberConversion(xsltDecimalFormatPtr self,
|
||||||
|
}
|
||||||
|
|
||||||
|
/* We have finished the integer part, now work on fraction */
|
||||||
|
- if (xsltUTF8Charcmp(the_format, self->decimalPoint) == 0) {
|
||||||
|
+ if ( (*the_format != 0) &&
|
||||||
|
+ (xsltUTF8Charcmp(the_format, self->decimalPoint) == 0) ) {
|
||||||
|
format_info.add_decimal = TRUE;
|
||||||
|
the_format += xsltUTF8Size(the_format); /* Skip over the decimal */
|
||||||
|
}
|
||||||
|
--
|
||||||
|
2.10.2
|
||||||
|
|
Loading…
Reference in a new issue