#VU116758 Use-after-free in Linux kernel - CVE-2022-50536
Published: October 8, 2025 / Updated: October 26, 2025
Vulnerability identifier: #VU116758
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-2022-50536
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 tcp_bpf_send_verdict() function in net/ipv4/tcp_bpf.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/113236e8f49f262f318c00ebb14b15f4834e87c1
- https://git.kernel.org/stable/c/28e4a763cd4a2b1a78852216ef4bd7df3a05cec6
- https://git.kernel.org/stable/c/578a7628b838a3ac8ad61deaab5a816ff032ac13
- https://git.kernel.org/stable/c/7508b9f4daac4ec7dfe0b6fb2d688b1c1c105e10
- https://git.kernel.org/stable/c/7a9841ca025275b5b0edfb0b618934abb6ceec15
- https://git.kernel.org/stable/c/8786bde11a4f31b63b3036731df0b47337a7a245
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.86