diff options
Diffstat (limited to 'audio/libsndfile/files/patch-CVE-2017-17456_2017-17457_2018-19661_2018-19662')
-rw-r--r-- | audio/libsndfile/files/patch-CVE-2017-17456_2017-17457_2018-19661_2018-19662 | 90 |
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])] ; |