Messages in this thread | | | Subject | Re: [PATCH v3] net: vmxnet3: fix possible use-after-free bugs in vmxnet3_rq_alloc_rx_buf() | From | patchwork-bot+netdevbpf@kernel ... | Date | Tue, 17 May 2022 10:20:11 +0000 |
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Hello:
This patch was applied to netdev/net.git (master) by Paolo Abeni <pabeni@redhat.com>:
On Sat, 14 May 2022 13:06:56 +0800 you wrote: > In vmxnet3_rq_alloc_rx_buf(), when dma_map_single() fails, rbi->skb is > freed immediately. Similarly, in another branch, when dma_map_page() fails, > rbi->page is also freed. In the two cases, vmxnet3_rq_alloc_rx_buf() > returns an error to its callers vmxnet3_rq_init() -> vmxnet3_rq_init_all() > -> vmxnet3_activate_dev(). Then vmxnet3_activate_dev() calls > vmxnet3_rq_cleanup_all() in error handling code, and rbi->skb or rbi->page > are freed again in vmxnet3_rq_cleanup_all(), causing use-after-free bugs. > > [...]
Here is the summary with links: - [v3] net: vmxnet3: fix possible use-after-free bugs in vmxnet3_rq_alloc_rx_buf() https://git.kernel.org/netdev/net/c/9e7fef9521e7
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