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(parent: e433430) | patch
irda: prevent heap corruption on invalid nickname
authorDan Rosenberg <drosenberg@vsecurity.com>
Sat, 19 Mar 2011 20:14:30 +0000 (20:14 +0000)
committerDavid S. Miller <davem@davemloft.net>
Mon, 28 Mar 2011 00:59:02 +0000 (17:59 -0700)
commitd50e7e3604778bfc2dc40f440e0742dbae399d54
tree6ff38b491047533a9cbe74f04e231c14c2a6d0f3tree | snapshot
parente433430a0ca9cc1b851a83ac3b305e955b64880acommit | diff
irda: prevent heap corruption on invalid nickname

Invalid nicknames containing only spaces will result in an underflow in
a memcpy size calculation, subsequently destroying the heap and
panicking.

v2 also catches the case where the provided nickname is longer than the
buffer size, which can result in controllable heap corruption.

Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
net/irda/irnet/irnet_ppp.c diff | blob | history
Domain: System / Uncategorized;