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While processing ATAPI cmd_read/cmd_read_cd commands, Logical Block Address (LBA) maybe invalid OR closer to the last block, leading to an OOB access issues. Add range check to avoid it. Fixes: CVE-2020-29443 Reported-by: Wenxiang Qian <leonwxqian@gmail.com> Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> Message-Id: <20210118115130.457044-1-ppandit@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>