Use-after-free in Linux kernel - CVE-2026-90113
Published: September 19, 2026
Vulnerability identifier: #VU151368
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90113
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to access freed memory.
The vulnerability exists due to a use-after-free in the netdevsim queue-to-NAPI mapping when resetting a receive queue and requesting queue information through Netlink. A local user can reset a queue through the queue_reset debugfs interface and request queue information through NETDEV_CMD_QUEUE_GET to access freed memory.
Affected software
Linux kernel
How to mitigate CVE-2026-90113
Install security update from vendor's repository.