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-rw-r--r--audio/libsndfile/files/patch-CVE-2017-17456_2017-17457_2018-19661_2018-1966290
1 files changed, 90 insertions, 0 deletions
diff --git a/audio/libsndfile/files/patch-CVE-2017-17456_2017-17457_2018-19661_2018-19662 b/audio/libsndfile/files/patch-CVE-2017-17456_2017-17457_2018-19661_2018-19662
new file mode 100644
index 000000000000..a7755b8335e1
--- /dev/null
+++ b/audio/libsndfile/files/patch-CVE-2017-17456_2017-17457_2018-19661_2018-19662
@@ -0,0 +1,90 @@
+From: Hugo Lefeuvre <hle@owl.eu.com>
+Date: Mon, 24 Dec 2018 06:43:48 +0100
+Subject: 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).
+---
+ 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
+--- src/alaw.c
++++ 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
+--- src/ulaw.c
++++ 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])] ;