CVE:CVE-2021-20321
CNNVD:CNNVD-202112-1432
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 存在竞争条件问题漏洞，该漏洞源于 overlayfs 文件系统中的竞争条件问题。
solution:Upgrade linux linux_kernel to a higher version than 5.15,5.15,5.15:rc1,5.15:rc2,5.15:rc3,5.15:rc4,and avoid the version (,5.15),5.15,5.15:rc1,5.15:rc2,5.15:rc3,5.15:rc4; 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 9.0,10.0,and avoid the version 9.0,10.0