diff options
| author | Dan Rosenberg <drosenberg@vsecurity.com> | 2011-03-20 15:32:06 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-14 16:52:52 -0700 |
| commit | 0fc3fc08ecdb5496de33fb55955a0dab1a633329 (patch) | |
| tree | adc60bd5703581335dca63ebe64545c3c899cdfe /net | |
| parent | 7de774750bc8dee73855df5bf7aa4c92e7446088 (diff) | |
irda: validate peer name and attribute lengths
commit d370af0ef7951188daeb15bae75db7ba57c67846 upstream.
Length fields provided by a peer for names and attributes may be longer
than the destination array sizes. Validate lengths to prevent stack
buffer overflows.
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net')
| -rw-r--r-- | net/irda/iriap.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/irda/iriap.c b/net/irda/iriap.c index f7d6150e090..35a338b6d89 100644 --- a/net/irda/iriap.c +++ b/net/irda/iriap.c @@ -655,10 +655,16 @@ static void iriap_getvaluebyclass_indication(struct iriap_cb *self, n = 1; name_len = fp[n++]; + + IRDA_ASSERT(name_len < IAS_MAX_CLASSNAME + 1, return;); + memcpy(name, fp+n, name_len); n+=name_len; name[name_len] = '\0'; attr_len = fp[n++]; + + IRDA_ASSERT(attr_len < IAS_MAX_ATTRIBNAME + 1, return;); + memcpy(attr, fp+n, attr_len); n+=attr_len; attr[attr_len] = '\0'; |