CVE:CVE-2011-4112
CNNVD:CNNVD-201204-285
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。NFSv4 implementation是其中的一个分布式文件系统协议。
Linux kernel 3.1之前版本中的net子系统中存在漏洞，该漏洞源于未正确限制对IFF_TX_SKB_SHARING标记的使用。本地用户可通过利用CAP_NET_ADMIN性能访问/proc/net/pktgen/pgctrl，然后使用连接桥接设备（连接VLAN接口）的pktgen程序包，导致拒绝服务（死机）。
solution:Upgrade linux linux_kernel to a higher version than 3.1,and avoid the version (,3.1); Upgrade avaya 9608_firmware to a higher version than 6.6.0,and avoid the version [6.0,6.6.0]; Upgrade avaya 9608g_firmware to a higher version than 6.6.0,and avoid the version [6.0,6.6.0]; Upgrade avaya 9611g_firmware to a higher version than 6.6.0,and avoid the version [6.0,6.6.0]; Upgrade avaya 9621g_firmware to a higher version than 6.6.0,and avoid the version [6.0,6.6.0]; Upgrade avaya 9641g_firmware to a higher version than 6.6.0,and avoid the version [6.0,6.6.0]; Upgrade avaya 9641gs_firmware to a higher version than 6.6.0,and avoid the version [6.0,6.6.0]