CVE-2023-0461 | Date: (C)2023-03-01 (M)2024-06-04 |
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
CVSS Score and Metrics +CVSS Score and Metrics -CVSS V3 Severity: | CVSS V2 Severity: |
CVSS Score : 7.8 | CVSS Score : |
Exploit Score: 1.8 | Exploit Score: |
Impact Score: 5.9 | Impact Score: |
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CVSS V3 Metrics: | CVSS V2 Metrics: |
Attack Vector: LOCAL | Access Vector: |
Attack Complexity: LOW | Access Complexity: |
Privileges Required: LOW | Authentication: |
User Interaction: NONE | Confidentiality: |
Scope: UNCHANGED | Integrity: |
Confidentiality: HIGH | Availability: |
Integrity: HIGH | |
Availability: HIGH | |
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