atl2: Disable unimplemented scatter/gather feature

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[ Upstream commit f43bfaeddc ]

atl2 includes NETIF_F_SG in hw_features even though it has no support
for non-linear skbs.  This bug was originally harmless since the
driver does not claim to implement checksum offload and that used to
be a requirement for SG.

Now that SG and checksum offload are independent features, if you
explicitly enable SG *and* use one of the rare protocols that can use
SG without checkusm offload, this potentially leaks sensitive
information (before you notice that it just isn't working).  Therefore
this obscure bug has been designated CVE-2016-2117.

Reported-by: Justin Yackoski <jyackoski@crypto-nite.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Fixes: ec5f061564 ("net: Kill link between CSUM and SG features.")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

...

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Ben Hutchings 2016-04-20 23:23:08 +01:00 • committed by Sasha Levin

parent 67bc16d0f4

commit d06f8ffbe7

1 changed files with 1 additions and 1 deletions

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drivers/net/ethernet/atheros/atlx/atl2.c

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