Executive brief
A security vulnerability exists in the Microsoft Azure Network Adapter (MANA) driver for Linux, which manages high-performance network interfaces in cloud environments. An attacker who already has high-level access to a system could exploit this flaw to gain full control over the underlying operating system. This could lead to a complete compromise of the affected server, allowing the attacker to access sensitive data or disrupt services.
Technical details
A use-after-free (UAF) vulnerability exists within the Linux MANA (Microsoft Azure Network Adapter) driver, identified as CWE-416. The flaw is triggered when the driver incorrectly manages memory references, allowing an attacker to access or manipulate memory after it has been freed. This is a local attack requiring high privileges (PR:H) but no user interaction. Successful exploitation allows the attacker to escape restricted environments or elevate privileges to the kernel level, potentially leading to a full system compromise. The vulnerability is tracked under CVE-2026-45476 and was reported by Microsoft.
Affected products
- Linux Linux Kernel MANA Driver
Timeline
- 2026-06-09: disclosed: Initial disclosure by Microsoft and NVD publication.