/* * linux/include/asm-generic/ftrace.h * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef __ASM_GENERIC_FTRACE_H__ #define __ASM_GENERIC_FTRACE_H__ /* * Not all architectures need their own ftrace.h, the most * common definitions are already in linux/ftrace.h. */ #endif /* __ASM_GENERIC_FTRACE_H__ */ it' href='http:///git.distanz.ch/cgit.cgi/linux/net-next.git' title='net-next.git Git repository'/>
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authorEric Dumazet <edumazet@google.com>2017-02-04 11:16:52 -0800
committerDavid S. Miller <davem@davemloft.net>2017-02-04 19:42:28 -0500
commit34b2cef20f19c87999fff3da4071e66937db9644 (patch)
tree8511da9643a776f79e6ec8e99bf438444e19c49c /net/ipv4
parent5fa8bbda38c668e56b0c6cdecced2eac2fe36dec (diff)
ipv4: keep skb->dst around in presence of IP options
Andrey Konovalov got crashes in __ip_options_echo() when a NULL skb->dst is accessed. ipv4_pktinfo_prepare() should not drop the dst if (evil) IP options are present. We could refine the test to the presence of ts_needtime or srr, but IP options are not often used, so let's be conservative. Thanks to syzkaller team for finding this bug. Fixes: d826eb14ecef ("ipv4: PKTINFO doesnt need dst reference") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/ip_sockglue.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c