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SUSE-SU-2021:2384-1

Опубликовано: 16 июл. 2021
Источник: suse-cvrf

Описание

Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)

This update for the Linux Kernel 5.3.18-57 fixes one issue.

The following security issue was fixed:

  • CVE-2021-23133: Fixed a race condition in the SCTP sockets that can lead to kernel privilege escalation from the context of a network service or an unprivileged process. (bsc#1185901)

Список пакетов

SUSE Linux Enterprise Live Patching 15 SP2
kernel-livepatch-5_3_18-24_64-default-3-2.1
SUSE Linux Enterprise Live Patching 15 SP3
kernel-livepatch-5_3_18-57-default-3-3.1

Ссылки

Описание

A race condition in Linux kernel SCTP sockets (net/sctp/socket.c) before 5.12-rc8 can lead to kernel privilege escalation from the context of a network service or an unprivileged process. If sctp_destroy_sock is called without sock_net(sk)->sctp.addr_wq_lock then an element is removed from the auto_asconf_splist list without any proper locking. This can be exploited by an attacker with network service privileges to escalate to root or from the context of an unprivileged user directly if a BPF_CGROUP_INET_SOCK_CREATE is attached which denies creation of some SCTP socket.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_64-default-3-2.1
SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-3-3.1
Ссылки