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| author | Samuel Ortiz <samuel@sortiz.org> | 2010-10-11 01:17:56 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2010-10-11 02:12:17 +0200 |
| commit | efc463eb508798da4243625b08c7396462cabf9f (patch) | |
| tree | 2fd36e3c2d42182b67521010c11af1ceb2b754e7 /net/irda | |
| parent | 3b06dbbeadb6488cd00999b61b080bb6f0218503 (diff) | |
| download | linux-efc463eb508798da4243625b08c7396462cabf9f.tar.gz linux-efc463eb508798da4243625b08c7396462cabf9f.tar.bz2 linux-efc463eb508798da4243625b08c7396462cabf9f.zip | |
irda: Fix parameter extraction stack overflow
Cc: stable@kernel.org
Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com>
Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Diffstat (limited to 'net/irda')
| -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 */ |