#VU121370 Use-after-free in Linux kernel - CVE-2025-71066
Published: January 14, 2026
Vulnerability identifier: #VU121370
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-71066
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ets_qdisc_change() function in net/sched/sch_ets.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/06bfb66a7c8b45e3fed01351a4b087410ae5ef39
- https://git.kernel.org/stable/c/45466141da3c98a0c5fa88be0bc14b4b6a4bd75c
- https://git.kernel.org/stable/c/9987cda315c08f63a02423fa2f9a1f6602c861a0
- https://git.kernel.org/stable/c/a75d617a4ef08682f5cfaadc01d5141c87e019c9
- https://git.kernel.org/stable/c/ce052b9402e461a9aded599f5b47e76bc727f7de