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libsndfile1: Security fix CVE-2017-17456/17457 CVE-2018-19661/19662

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fix 4 CVEs, which is backport from
585cc28a93

(From OE-Core rev: 8f4af329df5373db8910726a6b954652623003dd)

(From OE-Core rev: 1f3577fb6bacb09d2826c879a38d3d7d329cc39a)

Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Changqing Li
2019-01-07 16:06:32 +08:00
committed by Richard Purdie
parent 938ada24fb
commit 4655904dbd
2 changed files with 102 additions and 0 deletions
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101
meta/recipes-multimedia/libsndfile/libsndfile1/0001-a-ulaw-fix-multiple-buffer-overflows-432.patch Normal file
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@@ -0,0 +1,101 @@
From 39453899fe1bb39b2e041fdf51a85aecd177e9c7 Mon Sep 17 00:00:00 2001
From: Changqing Li <changqing.li@windriver.com>
Date: Mon, 7 Jan 2019 15:55:03 +0800
Subject: [PATCH] a/ulaw: fix multiple buffer overflows (#432)
i2ulaw_array() and i2alaw_array() fail to handle ptr [count] = INT_MIN
properly, leading to buffer underflow. INT_MIN is a special value
since - INT_MIN cannot be represented as int.
In this case round - INT_MIN to INT_MAX and proceed as usual.
f2ulaw_array() and f2alaw_array() fail to handle ptr [count] = NaN
properly, leading to null pointer dereference.
In this case, arbitrarily set the buffer value to 0.
This commit fixes #429 (CVE-2018-19661 and CVE-2018-19662) and
fixes #344 (CVE-2017-17456 and CVE-2017-17457).
Upstream-Status: Backport[https://github.com/erikd/libsndfile/
commit/585cc28a93be27d6938f276af0011401b9f7c0ca]
CVE: CVE-2017-17456 CVE-2017-17457 CVE-2018-19661 CVE-2018-19662
Signed-off-by: Changqing Li <changqing.li@windriver.com>
---
src/alaw.c | 9 +++++++--
src/ulaw.c | 9 +++++++--
2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/src/alaw.c b/src/alaw.c
index 063fd1a..4220224 100644
--- a/src/alaw.c
+++ b/src/alaw.c
@@ -19,6 +19,7 @@
#include "sfconfig.h"
#include <math.h>
+#include <limits.h>
#include "sndfile.h"
#include "common.h"
@@ -326,7 +327,9 @@ s2alaw_array (const short *ptr, int count, unsigned char *buffer)
static inline void
i2alaw_array (const int *ptr, int count, unsigned char *buffer)
{ while (--count >= 0)
- { if (ptr [count] >= 0)
+ { if (ptr [count] == INT_MIN)
+ buffer [count] = alaw_encode [INT_MAX >> (16 + 4)] ;
+ else if (ptr [count] >= 0)
buffer [count] = alaw_encode [ptr [count] >> (16 + 4)] ;
else
buffer [count] = 0x7F & alaw_encode [- ptr [count] >> (16 + 4)] ;
@@ -346,7 +349,9 @@ f2alaw_array (const float *ptr, int count, unsigned char *buffer, float normfact
static inline void
d2alaw_array (const double *ptr, int count, unsigned char *buffer, double normfact)
{ while (--count >= 0)
- { if (ptr [count] >= 0)
+ { if (!isfinite (ptr [count]))
+ buffer [count] = 0 ;
+ else if (ptr [count] >= 0)
buffer [count] = alaw_encode [lrint (normfact * ptr [count])] ;
else
buffer [count] = 0x7F & alaw_encode [- lrint (normfact * ptr [count])] ;
diff --git a/src/ulaw.c b/src/ulaw.c
index e50b4cb..b6070ad 100644
--- a/src/ulaw.c
+++ b/src/ulaw.c
@@ -19,6 +19,7 @@
#include "sfconfig.h"
#include <math.h>
+#include <limits.h>
#include "sndfile.h"
#include "common.h"
@@ -827,7 +828,9 @@ s2ulaw_array (const short *ptr, int count, unsigned char *buffer)
static inline void
i2ulaw_array (const int *ptr, int count, unsigned char *buffer)
{ while (--count >= 0)
- { if (ptr [count] >= 0)
+ { if (ptr [count] == INT_MIN)
+ buffer [count] = ulaw_encode [INT_MAX >> (16 + 2)] ;
+ else if (ptr [count] >= 0)
buffer [count] = ulaw_encode [ptr [count] >> (16 + 2)] ;
else
buffer [count] = 0x7F & ulaw_encode [-ptr [count] >> (16 + 2)] ;
@@ -847,7 +850,9 @@ f2ulaw_array (const float *ptr, int count, unsigned char *buffer, float normfact
static inline void
d2ulaw_array (const double *ptr, int count, unsigned char *buffer, double normfact)
{ while (--count >= 0)
- { if (ptr [count] >= 0)
+ { if (!isfinite (ptr [count]))
+ buffer [count] = 0 ;
+ else if (ptr [count] >= 0)
buffer [count] = ulaw_encode [lrint (normfact * ptr [count])] ;
else
buffer [count] = 0x7F & ulaw_encode [- lrint (normfact * ptr [count])] ;
--
2.7.4

1
meta/recipes-multimedia/libsndfile/libsndfile1_1.0.28.bb
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@@ -13,6 +13,7 @@ SRC_URI = "http://www.mega-nerd.com/libsndfile/files/libsndfile-${PV}.tar.gz \
file://CVE-2017-14245-14246.patch \
file://CVE-2017-14634.patch \
file://CVE-2018-13139.patch \
file://0001-a-ulaw-fix-multiple-buffer-overflows-432.patch \
"
SRC_URI[md5sum] = "646b5f98ce89ac60cdb060fcd398247c"