Описание
Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP5)
This update for the Linux Kernel 5.14.21-150500_53 fixes several issues.
The following security issues were fixed:
- CVE-2023-6531: Fixed a use-after-free flaw due to a race problem in the unix garbage collector's deletion of SKB races with unix_stream_read_generic()on the socket that the SKB is queued on (bsc#1218487).
- CVE-2023-46813: Fixed a local privilege escalation with user-space programs that have access to MMIO regions (bsc#1216898).
- CVE-2023-39191: Fixed a lack of validation of dynamic pointers within user-supplied eBPF programs that may have allowed an attacker with CAP_BPF privileges to escalate privileges and execute arbitrary code. (bsc#1215863)
- CVE-2023-51779: Fixed a use-after-free because of a bt_sock_ioctl race condition in bt_sock_recvmsg (bsc#1218610).
- CVE-2023-0461: Fixed use-after-free in icsk_ulp_data (bsc#1208911).
Список пакетов
SUSE Linux Enterprise Live Patching 15 SP5
Ссылки
- Link for SUSE-SU-2024:1039-1
- E-Mail link for SUSE-SU-2024:1039-1
- SUSE Security Ratings
- SUSE Bug 1208911
- SUSE Bug 1215887
- SUSE Bug 1216898
- SUSE Bug 1218487
- SUSE Bug 1218610
- SUSE CVE CVE-2023-0461 page
- SUSE CVE CVE-2023-39191 page
- SUSE CVE CVE-2023-46813 page
- SUSE CVE CVE-2023-51779 page
- SUSE CVE CVE-2023-6531 page
Описание
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
Затронутые продукты
Ссылки
- CVE-2023-0461
- SUSE Bug 1208787
- SUSE Bug 1208911
- SUSE Bug 1211833
- SUSE Bug 1217079
- SUSE Bug 1218514
Описание
An improper input validation flaw was found in the eBPF subsystem in the Linux kernel. The issue occurs due to a lack of proper validation of dynamic pointers within user-supplied eBPF programs prior to executing them. This may allow an attacker with CAP_BPF privileges to escalate privileges and execute arbitrary code in the context of the kernel.
Затронутые продукты
Ссылки
- CVE-2023-39191
- SUSE Bug 1215863
- SUSE Bug 1215887
Описание
An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with userspace access to MMIO registers. Incorrect access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses could lead to arbitrary write access to kernel memory (and thus privilege escalation). This depends on a race condition through which userspace can replace an instruction before the #VC handler reads it.
Затронутые продукты
Ссылки
- CVE-2023-46813
- SUSE Bug 1212649
- SUSE Bug 1216896
Описание
bt_sock_recvmsg in net/bluetooth/af_bluetooth.c in the Linux kernel through 6.6.8 has a use-after-free because of a bt_sock_ioctl race condition.
Затронутые продукты
Ссылки
- CVE-2023-51779
- SUSE Bug 1218559
- SUSE Bug 1218610
- SUSE Bug 1220015
- SUSE Bug 1220191
- SUSE Bug 1221578
- SUSE Bug 1221598
Описание
A use-after-free flaw was found in the Linux Kernel due to a race problem in the unix garbage collector's deletion of SKB races with unix_stream_read_generic() on the socket that the SKB is queued on.
Затронутые продукты
Ссылки
- CVE-2023-6531
- SUSE Bug 1218447
- SUSE Bug 1218487