2.6.38-stable review patch. If anyone has any objections, please let us know.
------------------ From: Vasiliy Kulikov <[email protected]> commit 67c5c6cb8129c595f21e88254a3fc6b3b841ae8e upstream. struct aunhdr has 4 padding bytes between 'pad' and 'handle' fields on x86_64. These bytes are not initialized in the variable 'ah' before sending 'ah' to the network. This leads to 4 bytes kernel stack infoleak. This bug was introduced before the git epoch. Signed-off-by: Vasiliy Kulikov <[email protected]> Acked-by: Phil Blundell <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- net/econet/af_econet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/econet/af_econet.c +++ b/net/econet/af_econet.c @@ -435,10 +435,10 @@ static int econet_sendmsg(struct kiocb * udpdest.sin_addr.s_addr = htonl(network | addr.station); } + memset(&ah, 0, sizeof(ah)); ah.port = port; ah.cb = cb & 0x7f; ah.code = 2; /* magic */ - ah.pad = 0; /* tack our header on the front of the iovec */ size = sizeof(struct aunhdr); _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
