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| author | Julien TINNES <julien@cr0.org> | 2009-08-27 15:26:58 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-09-08 20:34:04 -0700 |
| commit | 72b57bef7b0e7e3bae7ef607a05435d8fa115c31 (patch) | |
| tree | fd6b146f6cabba649ab206ea6abb9559da0dba24 | |
| parent | 36c32cab609e449a3b9fbb0543717799a287eb63 (diff) | |
| download | linux-stable-72b57bef7b0e7e3bae7ef607a05435d8fa115c31.tar.gz linux-stable-72b57bef7b0e7e3bae7ef607a05435d8fa115c31.tar.bz2 linux-stable-72b57bef7b0e7e3bae7ef607a05435d8fa115c31.zip | |
ipv4: make ip_append_data() handle NULL routing table
commit 788d908f2879a17e5f80924f3da2e23f1034482d upstream.
Add a check in ip_append_data() for NULL *rtp to prevent future bugs in
callers from being exploitable.
Signed-off-by: Julien Tinnes <julien@cr0.org>
Signed-off-by: Tavis Ormandy <taviso@sdf.lonestar.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | net/ipv4/ip_output.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index 3e7e910c7c0f..d1d88e6255bc 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -814,6 +814,8 @@ int ip_append_data(struct sock *sk, inet->cork.addr = ipc->addr; } rt = *rtp; + if (unlikely(!rt)) + return -EFAULT; /* * We steal reference to this route, caller should not release it */ |