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3f429bdcfe
We do not currently check the length of the caller's buffer for received packets. This creates a potential buffer overrun when iPXE is being used via the SNP or UNDI protocols. Fix by checking the buffer length and correctly returning the required length and an EFI_BUFFER_TOO_SMALL error. Reported-by: Paul McMillan <paul.mcmillan@oracle.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
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