Уязвимость компонента net/sctp/socket.c ядра операционной системы Linux, позволяющая нарушителю повысить свои привилегии

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.

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.

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.

A race condition in Linux kernel SCTP sockets (net/sctp/socket.c) befo ...

ALT-PU-2021-1707: package `kernel-image-un-def` update to version 5.11.16-alt1

ALT-PU-2021-1706: package `kernel-image-std-def` update to version 5.10.32-alt1

ALT-PU-2021-2370: package `kernel-image-std-debug` update to version 5.10.54-alt1

ALT-PU-2021-2678: package `kernel-image-std-debug` update to version 5.10.61-alt1

ALT-PU-2021-2677: package `kernel-image-std-pae` update to version 5.10.61-alt1

Security update for the Linux Kernel (Live Patch 17 for SLE 12 SP5)

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

Security update for the Linux Kernel (Live Patch 12 for SLE 15 SP2)

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.

ALT-PU-2021-2672: package `kernel-image-std-pae` update to version 5.10.61-alt1

Security update for the Linux Kernel (Live Patch 12 for SLE 12 SP5)

Security update for the Linux Kernel (Live Patch 5 for SLE 15 SP2)

Security update for the Linux Kernel (Live Patch 10 for SLE 15 SP2)

Security update for the Linux Kernel (Live Patch 15 for SLE 15 SP1)