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Fri, 17 Apr 2026 21:57:07 -0700 (PDT) Received: from KERNELXING-MC1.tencent.com ([2408:8207:1924:8520:35f1:286f:2ada:eed0]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3614195a92asm3502377a91.10.2026.04.17.21.57.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Apr 2026 21:57:07 -0700 (PDT) From: Jason Xing 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 Subject: [PATCH net 0/4] xsk: fix bugs around xsk skb allocation Date: Sat, 18 Apr 2026 12:56:40 +0800 Message-Id: <20260418045644.28612-1-kerneljasonxing@gmail.com> X-Mailer: git-send-email 2.33.0 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Jason Xing 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