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-rw-r--r--user/sox/CVE-2017-15372.patch100
1 files changed, 100 insertions, 0 deletions
diff --git a/user/sox/CVE-2017-15372.patch b/user/sox/CVE-2017-15372.patch
new file mode 100644
index 000000000..dd7fcff5d
--- /dev/null
+++ b/user/sox/CVE-2017-15372.patch
@@ -0,0 +1,100 @@
+From 515b986139183326cc40c67c75f83edc60826a9e Mon Sep 17 00:00:00 2001
+From: Mans Rullgard <mans@mansr.com>
+Date: Wed, 8 Nov 2017 00:27:46 +0000
+Subject: [PATCH] adpcm: fix stack overflow with >4 channels (CVE-2017-15372)
+
+---
+ src/adpcm.c | 8 +++++++-
+ src/adpcm.h | 3 +++
+ src/wav.c | 5 ++++-
+ 3 files changed, 14 insertions(+), 2 deletions(-)
+
+diff --git a/src/adpcm.c b/src/adpcm.c
+index 2e13867e..f64b7d5c 100644
+--- a/src/adpcm.c
++++ b/src/adpcm.c
+@@ -71,6 +71,11 @@ const short lsx_ms_adpcm_i_coef[7][2] = {
+ { 392,-232}
+ };
+
++extern void *lsx_ms_adpcm_alloc(unsigned chans)
++{
++ return lsx_malloc(chans * sizeof(MsState_t));
++}
++
+ static inline sox_sample_t AdpcmDecode(sox_sample_t c, MsState_t *state,
+ sox_sample_t sample1, sox_sample_t sample2)
+ {
+@@ -102,6 +107,7 @@ static inline sox_sample_t AdpcmDecode(sox_sample_t c, MsState_t *state,
+
+ /* lsx_ms_adpcm_block_expand_i() outputs interleaved samples into one output buffer */
+ const char *lsx_ms_adpcm_block_expand_i(
++ void *priv,
+ unsigned chans, /* total channels */
+ int nCoef,
+ const short *coef,
+@@ -113,7 +119,7 @@ const char *lsx_ms_adpcm_block_expand_i(
+ const unsigned char *ip;
+ unsigned ch;
+ const char *errmsg = NULL;
+- MsState_t state[4]; /* One decompressor state for each channel */
++ MsState_t *state = priv; /* One decompressor state for each channel */
+
+ /* Read the four-byte header for each channel */
+ ip = ibuff;
+diff --git a/src/adpcm.h b/src/adpcm.h
+index af4d6f08..db5cc615 100644
+--- a/src/adpcm.h
++++ b/src/adpcm.h
+@@ -29,8 +29,11 @@
+ /* default coef sets */
+ extern const short lsx_ms_adpcm_i_coef[7][2];
+
++extern void *lsx_ms_adpcm_alloc(unsigned chans);
++
+ /* lsx_ms_adpcm_block_expand_i() outputs interleaved samples into one output buffer */
+ extern const char *lsx_ms_adpcm_block_expand_i(
++ void *priv,
+ unsigned chans, /* total channels */
+ int nCoef,
+ const short *coef,
+diff --git a/src/wav.c b/src/wav.c
+index fad334cf..066be6d7 100644
+--- a/src/wav.c
++++ b/src/wav.c
+@@ -82,6 +82,7 @@ typedef struct {
+ /* following used by *ADPCM wav files */
+ unsigned short nCoefs; /* ADPCM: number of coef sets */
+ short *lsx_ms_adpcm_i_coefs; /* ADPCM: coef sets */
++ void *ms_adpcm_data; /* Private data of adpcm decoder */
+ unsigned char *packet; /* Temporary buffer for packets */
+ short *samples; /* interleaved samples buffer */
+ short *samplePtr; /* Pointer to current sample */
+@@ -175,7 +176,7 @@ static unsigned short AdpcmReadBlock(sox_format_t * ft)
+ }
+ }
+
+- errmsg = lsx_ms_adpcm_block_expand_i(ft->signal.channels, wav->nCoefs, wav->lsx_ms_adpcm_i_coefs, wav->packet, wav->samples, samplesThisBlock);
++ errmsg = lsx_ms_adpcm_block_expand_i(wav->ms_adpcm_data, ft->signal.channels, wav->nCoefs, wav->lsx_ms_adpcm_i_coefs, wav->packet, wav->samples, samplesThisBlock);
+
+ if (errmsg)
+ lsx_warn("%s", errmsg);
+@@ -791,6 +792,7 @@ static int startread(sox_format_t * ft)
+
+ /* nCoefs, lsx_ms_adpcm_i_coefs used by adpcm.c */
+ wav->lsx_ms_adpcm_i_coefs = lsx_malloc(wav->nCoefs * 2 * sizeof(short));
++ wav->ms_adpcm_data = lsx_ms_adpcm_alloc(wChannels);
+ {
+ int i, errct=0;
+ for (i=0; len>=2 && i < 2*wav->nCoefs; i++) {
+@@ -1216,6 +1218,7 @@ static int stopread(sox_format_t * ft)
+ free(wav->packet);
+ free(wav->samples);
+ free(wav->lsx_ms_adpcm_i_coefs);
++ free(wav->ms_adpcm_data);
+ free(wav->comment);
+ wav->comment = NULL;
+
+--
+2.25.0
+