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| author | Eric Dumazet <edumazet@google.com> | 2018-04-07 13:42:39 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-16 10:10:23 +0200 |
| commit | 5652aed1de29c6e977608effa94ce217f3b959e7 (patch) | |
| tree | 5645d4700d0326ede4b37cd8c790b9c3509792e1 /net | |
| parent | ced9763b911d66ab4da4a9edf2a8d3ce29238af8 (diff) | |
| download | linux-exynos-5652aed1de29c6e977608effa94ce217f3b959e7.tar.gz linux-exynos-5652aed1de29c6e977608effa94ce217f3b959e7.tar.bz2 linux-exynos-5652aed1de29c6e977608effa94ce217f3b959e7.zip | |
net: initialize skb->peeked when cloning
commit b13dda9f9aa7caceeee61c080c2e544d5f5d85e5 upstream.
syzbot reported __skb_try_recv_from_queue() was using skb->peeked
while it was potentially unitialized.
We need to clear it in __skb_clone()
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/skbuff.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 564beb7e6d1c..ef734ad1d852 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -857,6 +857,7 @@ static struct sk_buff *__skb_clone(struct sk_buff *n, struct sk_buff *skb) n->hdr_len = skb->nohdr ? skb_headroom(skb) : skb->hdr_len; n->cloned = 1; n->nohdr = 0; + n->peeked = 0; n->destructor = NULL; C(tail); C(end); |