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
References
| Link | Resource |
|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2c02d41d71f90a5168391b6a5f2954112ba2307c | Mailing List Patch |
| https://kernel.dance/#2c02d41d71f90a5168391b6a5f2954112ba2307c | Patch |
| https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html | Third Party Advisory |
Configurations
Configuration 1 (hide)
|
History
06 Jun 2023, 19:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | (MISC) https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html - Third Party Advisory | |
| References | (MISC) https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html - Third Party Advisory |
Information
Published : 2023-02-28 15:15
Updated : 2024-02-28 19:51
NVD link : CVE-2023-0461
Mitre link : CVE-2023-0461
CVE.ORG link : CVE-2023-0461
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free