CVE-2023-2640

Summary

CVE-2023-2640 is a vulnerability affecting certain Ubuntu kernels. When these kernels have both the specific commit c914c0e27eb0 and the "UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs" configuration, an unprivileged user can set privileged extended attributes on mounted files. These attributes can then be propagated to the parent directories without proper security checks, potentially leading to elevated privileges. This issue poses a risk to the confidentiality and integrity of affected systems.

Prevent cyber attacks with Recorded Future by prioritizing and patching critical vulnerabilities being exploited by threat actors targeting your industry. Book your demo to learn more.