发布于3月6日3月6日 Members Amazon Linux AMI: CVE-2023-0461: Security patch for kernel (ALAS-2023-1706) Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 02/28/2023 Created 01/25/2025 Added 04/11/2024 Modified 04/11/2024 Description There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local privilege escalation. To reach the vulnerability kernel configuration flag CONFIG_TLS or CONFIG_XFRM_ESPINTCP has to be configured, but the operation does not require any privilege. There is a use-after-free bug of icsk_ulp_data of a struct inet_connection_sock. When CONFIG_TLS is enabled, user can install a tls context (struct tls_context) on a connected tcp socket. The context is not cleared if this socket is disconnected and reused as a listener. If a new socket is created from the listener, the context is inherited and vulnerable. The setsockopt TCP_ULP operation does not require any privilege. We recommend upgrading past commit 2c02d41d71f90a5168391b6a5f2954112ba2307c Solution(s) amazon-linux-upgrade-kernel References ALAS-2023-1706 CVE-2023-0461
