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An integer underflow in dpdk versions before 18.11.10 and before 19.11.5 in the `move_desc` function can lead to large amounts of CPU cycles being eaten up in a long running loop. An attacker could cause `move_desc` to get stuck in a 4,294,967,295-count iteration loop. Depending on how `vhost_crypto` is being used this could prevent other VMs or network tasks from being serviced by the busy DPDK lcore for an extended period.

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整数下溢(超界折返)

DPDK 数字错误漏洞

DPDK是一款基于Linux平台的数据平面开发套件。该产品支持在多种CPU架构上执行数据包处理。 DPDK 18.11.10之前版本和19.11.5之前版本move_desc存在数字错误漏洞，该漏洞源于DPDK错误地处理了虚拟主机加密，该漏洞允许攻击者造成拒绝服务攻击、从中获取敏感信息，并可能在主机上执行任意代码。

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