net: Fix usage of pskb_trim_rcsum

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[ Upstream commit 6c57f04580 ]

In certain cases, pskb_trim_rcsum() may change skb pointers.
Reinitialize header pointers afterwards to avoid potential
use-after-frees. Add a note in the documentation of
pskb_trim_rcsum(). Found by KASAN.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Ross Lagerwall 2019-01-17 15:34:38 +00:00 • committed by Greg Kroah-Hartman

parent 21ac645bee

commit 38c00a1831

5 changed files with 5 additions and 0 deletions

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drivers/net/ppp/pppoe.c

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include/linux/skbuff.h

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net/bridge/br_netfilter_ipv6.c

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net/bridge/netfilter/nft_reject_bridge.c

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net/ipv4/ip_input.c

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