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David S. Miller 676d23690f net: Fix use after free by removing length arg from sk_data_ready callbacks. ... Several spots in the kernel perform a sequence like: skb_queue_tail(&sk->s_receive_queue, skb); sk->sk_data_ready(sk, skb->len); But at the moment we place the SKB onto the socket receive queue it can be consumed and freed up. So this skb->len access is potentially to freed up memory. Furthermore, the skb->len can be modified by the consumer so it is possible that the value isn't accurate. And finally, no actual implementation of this callback actually uses the length argument. And since nobody actually cared about it's value, lots of call sites pass arbitrary values in such as '0' and even '1'. So just remove the length argument from the callback, that way there is no confusion whatsoever and all of these use-after-free cases get fixed as a side effect. Based upon a patch by Eric Dumazet and his suggestion to audit this issue tree-wide. Signed-off-by: David S. Miller <davem@davemloft.net>		11 years ago
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hci	NFC: Use LIST_HEAD() at appropriate places	11 years ago
nci	NFC: 3.15: First pull request	11 years ago
Kconfig	…
Makefile	…
af_nfc.c	…
core.c	NFC: Move checking valid gb_len value to nfc_llcp_set_remote_gb	11 years ago
digital.h	NFC: digital: Add ISO-DEP support for data exchange	11 years ago
digital_core.c	NFC: digital: Rename Type V tags to Type 5 tags	11 years ago
digital_dep.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	11 years ago
digital_technology.c	NFC: digital: Add ISO-DEP support for data exchange	11 years ago
llcp.h	…
llcp_commands.c	…
llcp_core.c	net: Fix use after free by removing length arg from sk_data_ready callbacks.	11 years ago
llcp_sock.c	net: add build-time checks for msg->msg_name size	11 years ago
netlink.c	NFC: Add netlink support for ISO/IEC 15693	11 years ago
nfc.h	…
rawsock.c	…