CVE-2021-43057

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Summary:

An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corruption and escalate privileges, aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.

Reference Links(if available):

  • https://bugs.chromium.org/p/project-zero/issues/detail?id=2229
  • https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.8
  • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a3727a8bac0a9e77c70820655fd8715523ba3db7
  • https://security.netapp.com/advisory/ntap-20211125-0001/
  • CVSS Score (if available)

    v2: / HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C

    v3: / HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

    Links to Exploits(if available)

  • Available for Amazon Prime