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CVE-2021-4154 exploit

CVE-2021-4154

This bug was fix in https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3b0462726e7ef281c35a7a4ae33e93ee2bc9975b

This exploit works on most pre-patch kernels for:

  • CentOS 8 kernels higher than linux-4.18.0-305.el8
  • Debian 11 kernels higher than 5.10.0-8
  • Fedora 31/32/33 kernels higher than 5.3.7-301.fc31
  • Ubuntu 18/20 kernels higher than 5.4.0-84 and 5.11.0-37.41

Please feel free to send a PR to update README if you find it could work on other kernels.