CVE-2021-43057

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)