发布于3月6日3月6日 Members Ubuntu: (Multiple Advisories) (CVE-2023-0461): Linux kernel (HWE) vulnerabilities Severity 7 CVSS (AV:L/AC:L/Au:S/C:C/I:C/A:C) Published 02/28/2023 Created 03/29/2023 Added 03/22/2023 Modified 01/28/2025 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. 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ubuntu-upgrade-linux-image-oem-22-04c ubuntu-upgrade-linux-image-oem-osp1 ubuntu-upgrade-linux-image-oracle ubuntu-upgrade-linux-image-oracle-lts-18-04 ubuntu-upgrade-linux-image-oracle-lts-20-04 ubuntu-upgrade-linux-image-raspi ubuntu-upgrade-linux-image-raspi-hwe-18-04 ubuntu-upgrade-linux-image-raspi-nolpae ubuntu-upgrade-linux-image-raspi2 ubuntu-upgrade-linux-image-snapdragon ubuntu-upgrade-linux-image-snapdragon-hwe-18-04 ubuntu-upgrade-linux-image-virtual ubuntu-upgrade-linux-image-virtual-hwe-16-04 ubuntu-upgrade-linux-image-virtual-hwe-18-04 ubuntu-upgrade-linux-image-virtual-hwe-20-04 ubuntu-upgrade-linux-image-virtual-hwe-22-04 References https://attackerkb.com/topics/cve-2023-0461 CVE - 2023-0461 USN-5883-1 USN-5911-1 USN-5912-1 USN-5913-1 USN-5914-1 USN-5915-1 USN-5917-1 USN-5919-1 USN-5920-1 USN-5924-1 USN-5925-1 USN-5927-1 USN-5929-1 USN-5934-1 USN-5935-1 USN-5938-1 USN-5939-1 USN-5940-1 USN-5941-1 USN-5950-1 USN-5951-1 USN-5962-1 USN-5975-1 USN-5976-1 USN-6000-1 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