CVE-2021-43537 is a vulnerability that was discovered in the Linux kernel. This flaw allows attackers with local access to escalate their privileges and gain root access to the system. In other words, an attacker who successfully exploits this vulnerability could gain complete control over the affected system.
The vulnerability was first disclosed on September 14, 2021, and affects all versions of the Linux kernel prior to 5.14.8. It was caused by a race condition in the file system code that could be triggered by a malicious user. The flaw was identified and reported by security researcher Jann Horn of Google Project Zero.
As soon as the vulnerability was disclosed, the Linux community released a patch to address the issue. System administrators and users were strongly encouraged to apply the patch immediately to protect their systems from potential exploitation. As always, it's critical to keep software up-to-date and promptly patch any identified vulnerabilities to prevent attacks and ensure system security.