45 lines
1.3 KiB
Diff
45 lines
1.3 KiB
Diff
|
Upstream fix for CVE-2015-6749.
|
||
|
|
https://trac.xiph.org/ticket/2212
|
||
|
|
|
||
|
|
From 04815d3e1bfae3a6cdfb2c25358a5a72b61299f7 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Mark Harris <mark.hsj@gmail.com>
|
||
|
|
Date: Sun, 30 Aug 2015 05:54:46 -0700
|
||
|
|
Subject: [PATCH] oggenc: Fix large alloca on bad AIFF input
|
||
|
|
|
||
|
|
Fixes #2212
|
||
|
|
---
|
||
|
|
oggenc/audio.c | 10 +++++-----
|
||
|
|
1 file changed, 5 insertions(+), 5 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/oggenc/audio.c b/oggenc/audio.c
|
||
|
|
index 477da8c..4921fb9 100644
|
||
|
|
--- a/oggenc/audio.c
|
||
|
|
+++ b/oggenc/audio.c
|
||
|
|
@@ -245,8 +245,8 @@ static int aiff_permute_matrix[6][6] =
|
||
|
|
int aiff_open(FILE *in, oe_enc_opt *opt, unsigned char *buf, int buflen)
|
||
|
|
{
|
||
|
|
int aifc; /* AIFC or AIFF? */
|
||
|
|
- unsigned int len;
|
||
|
|
- unsigned char *buffer;
|
||
|
|
+ unsigned int len, readlen;
|
||
|
|
+ unsigned char buffer[22];
|
||
|
|
unsigned char buf2[8];
|
||
|
|
aiff_fmt format;
|
||
|
|
aifffile *aiff = malloc(sizeof(aifffile));
|
||
|
|
@@ -269,9 +269,9 @@ int aiff_open(FILE *in, oe_enc_opt *opt, unsigned char *buf, int buflen)
|
||
|
|
return 0; /* Weird common chunk */
|
||
|
|
}
|
||
|
|
|
||
|
|
- buffer = alloca(len);
|
||
|
|
-
|
||
|
|
- if(fread(buffer,1,len,in) < len)
|
||
|
|
+ readlen = len < sizeof(buffer) ? len : sizeof(buffer);
|
||
|
|
+ if(fread(buffer,1,readlen,in) < readlen ||
|
||
|
|
+ (len > readlen && !seek_forward(in, len-readlen)))
|
||
|
|
{
|
||
|
|
fprintf(stderr, _("Warning: Unexpected EOF in reading AIFF header\n"));
|
||
|
|
return 0;
|
||
|
|
--
|
||
|
|
2.5.0
|
||
|
|
|