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CVE-2024-58099 is an incorrect calculation flaw in the Linux kernel vmxnet3 driver's native XDP transmit path, in vmxnet3_xdp_xmit_frame(). The function derives the DMA address using a fixed VMXNET3_XDP_HEADROOM offset. This assumption is invalid when an XDP BPF program has adjusted the packet data pointer, such as by adding an IPIP encapsulation header. Although the transmitted buffer length remains correct, the incorrect DMA offset causes vmxnet3 to transmit corrupted packet contents. The fix derives the DMA offset dynamically from the distance between the XDP frame data pointer and its hard-start address.
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Linux kernel vmxnet3 driver packet-corruption issue in vmxnet3_xdp_xmit_frame.
Unknown
A Linux kernel vmxnet3 vulnerability causing packet corruption in vmxnet3_xdp_xmit_frame due to incorrect DMA address calculation when an XDP BPF program moves xdp->data, leading to corrupted packets being transmitted and dropped.
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