From: Jason Xing <kerneljasonxing@gmail.com>
To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, bjorn@kernel.org, magnus.karlsson@intel.com,
maciej.fijalkowski@intel.com, jonathan.lemon@gmail.com,
sdf@fomichev.me, ast@kernel.org, daniel@iogearbox.net,
hawk@kernel.org, john.fastabend@gmail.com, horms@kernel.org,
andrew+netdev@lunn.ch
Cc: bpf@vger.kernel.org, netdev@vger.kernel.org,
Jason Xing <kernelxing@tencent.com>
Subject: [PATCH net 0/4] xsk: fix bugs around xsk skb allocation
Date: Sat, 18 Apr 2026 12:56:40 +0800 [thread overview]
Message-ID: <20260418045644.28612-1-kerneljasonxing@gmail.com> (raw)
From: Jason Xing <kernelxing@tencent.com>
There are four extremely rare issues around xsk_build_skb(). Two of them
were founded by Sashiko[1].
[1]: https://lore.kernel.org/all/20260415082654.21026-1-kerneljasonxing@gmail.com/
Jason Xing (4):
xsk: avoid skb leak in XDP_TX_METADATA case
xsk: free the skb when hitting the upper bound MAX_SKB_FRAGS
xsk: handle NULL dereference of the skb without frags issue
xsk: fix use-after-free of xs->skb in xsk_build_skb() free_err path
net/xdp/xsk.c | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
--
2.41.3
next reply other threads:[~2026-04-18 4:57 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-18 4:56 Jason Xing [this message]
2026-04-18 4:56 ` [PATCH net 1/4] xsk: avoid skb leak in XDP_TX_METADATA case Jason Xing
2026-04-20 15:22 ` Stanislav Fomichev
2026-04-20 15:42 ` Stanislav Fomichev
2026-04-20 16:27 ` Stanislav Fomichev
2026-04-21 0:55 ` Jason Xing
2026-04-18 4:56 ` [PATCH net 2/4] xsk: free the skb when hitting the upper bound MAX_SKB_FRAGS Jason Xing
2026-04-20 15:44 ` Stanislav Fomichev
2026-04-18 4:56 ` [PATCH net 3/4] xsk: handle NULL dereference of the skb without frags issue Jason Xing
2026-04-18 4:56 ` [PATCH net 4/4] xsk: fix use-after-free of xs->skb in xsk_build_skb() free_err path Jason Xing
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