Tracker / CVE-2023-0461
CVE-2023-0461
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
Prodotti e versioni affette
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 4.13.0 → 4.14.303 |
| linux | linux_kernel · 4.19 → 4.19.270 |
| linux | linux_kernel · 5.10 → 5.10.163 |
| linux | linux_kernel · 5.15 → 5.15.88 |
| linux | linux_kernel · 5.4 → 5.4.229 |
| linux | linux_kernel · 6.0 → 6.0.19 |
| linux | linux_kernel · 6.1 → 6.1.5 |