High severity7.8NVD Advisory· Published Oct 28, 2021· Updated Jun 17, 2026
CVE-2021-43057
CVE-2021-43057
Description
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.
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Affected products
2- Linux/Linux kerneldescription
- Range: <5.14.8
Patches
Vulnerability mechanics
References
4- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.8nvdPatchRelease NotesVendor Advisory
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/nvdPatchVendor Advisory
- bugs.chromium.org/p/project-zero/issues/detailnvdExploitPatchThird Party Advisory
- security.netapp.com/advisory/ntap-20211125-0001/nvdThird Party Advisory
News mentions
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