CVE:CVE-2021-31916
CNNVD:CNNVD-202105-287
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。
Linux kernel 5.12之前版本的Multi-device driver模块的drivers/md/dm-ioctl.c存在缓冲区错误漏洞，该漏洞可导致系统崩溃或内部内核信息泄漏。
solution:Upgrade linux linux_kernel to a higher version than 5.12,and avoid the version (,5.12); Upgrade redhat enterprise_linux to a higher version than 7.0,8.0,and avoid the version 7.0,8.0; Upgrade debian debian_linux to a higher version than 9.0,and avoid the version 9.0