Memory Leak Flaw in Linux Kernel's io_uring Could Lead to Privilege Escalation

Summary

The vulnerability CVE-2024-0582 is a memory leak flaw found in the Linux kernel's io_uring functionality. It allows a local user to crash or potentially escalate their privileges on the system, posing a risk of privilege escalation. Exploiting this vulnerability could lead to a data-only exploit, allowing a non-privileged user to achieve root privileges on affected systems. The vulnerability was patched in the stable release in December 2023, but it took over two months for the patch to be ported to Ubuntu kernels, creating a window of opportunity for exploitation. The exploitation mechanism relies on memory allocation in Linux and can potentially allow an attacker to modify system files, making the exploitation of this vulnerability a significant threat. Red Hat is the vendor affected and the vulnerability has been actively exploited.

News Articles

Cyber Security Informer

CVE-2024-0582CVE-2023-50969

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CybersecurityNews

CVE-2024-0582

Linux Kernel Flaw Let Attackers Gain Full Root Access: PoC Published

A critical vulnerability in the Linux kernel's io_uring subsystem, which could allow attackers to gain full root access to affected systems.

8 months ago

Exodus Intelligence

CVE-2024-0582

Mind the Patch Gap: Exploiting an io_uring Vulnerability in Ubuntu - Exodus Intelligence

By Oriol Castejón Overview In early January 2024, a Project Zero issue for a recently fixed io_uring use-after-free (UAF) vulnerability (CVE-2024-0582) was made public. Reading the issue description, it was apparent that the vulnerability allowed an attacker to obtain read and write access to a numb...

8 months ago