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| author | Samuel Ortiz <samuel@sortiz.org> | 2010-10-11 01:17:56 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-12-09 13:24:15 -0800 |
| commit | a1b9505e4a663cdb5bc522b9dfa5ac1d1528bae2 (patch) | |
| tree | 20f352c4b04be2884936200c1d91ddaf9eb706dd | |
| parent | 9a8fd43f43c06d372c6c3f3ae592683cc8603277 (diff) | |
| download | linux-stable-a1b9505e4a663cdb5bc522b9dfa5ac1d1528bae2.tar.gz | |
irda: Fix parameter extraction stack overflow
commit efc463eb508798da4243625b08c7396462cabf9f upstream.
Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com>
Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | net/irda/parameters.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/irda/parameters.c b/net/irda/parameters.c index fc1a20565e2d..71cd38c1a67f 100644 --- a/net/irda/parameters.c +++ b/net/irda/parameters.c @@ -298,6 +298,8 @@ static int irda_extract_string(void *self, __u8 *buf, int len, __u8 pi, p.pi = pi; /* In case handler needs to know */ p.pl = buf[1]; /* Extract length of value */ + if (p.pl > 32) + p.pl = 32; IRDA_DEBUG(2, "%s(), pi=%#x, pl=%d\n", __func__, p.pi, p.pl); @@ -318,7 +320,7 @@ static int irda_extract_string(void *self, __u8 *buf, int len, __u8 pi, (__u8) str[0], (__u8) str[1]); /* Null terminate string */ - str[p.pl+1] = '\0'; + str[p.pl] = '\0'; p.pv.c = str; /* Handler will need to take a copy */ |