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SUSE-SU-2021:3371-1

Опубликовано: 12 окт. 2021
Источник: suse-cvrf

Описание

Security update for the Linux Kernel (Live Patch 24 for SLE 15)

This update for the Linux Kernel 4.12.14-150_72 fixes several issues.

The following security issues were fixed:

  • CVE-2021-3715: Fixed a user-after-free in the Linux kernel's Traffic Control networking subsystem which could lead to local privilege escalation. (bsc#1190350).
  • CVE-2021-38160: Fixed a bug that could lead to a data corruption or loss. This can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190118)
  • CVE-2021-3640: Fixed a user-after-free bug in the function sco_sock_sendmsg which could lead to local privilege escalation. (bsc#1188613)
  • CVE-2021-3573: Fixed a user-after-free bug in the function hci_sock_bound_ioctl which could lead to local privilege escalation. (bsc#1187054).

Список пакетов

SUSE Linux Enterprise Live Patching 15
kernel-livepatch-4_12_14-150_75-default-4-2.1
kernel-livepatch-4_12_14-150_72-default-7-2.1

Ссылки

Описание

A use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hci_unregister_dev() together with one of the calls hci_sock_blacklist_add(), hci_sock_blacklist_del(), hci_get_conn_info(), hci_get_auth_info(). A privileged local user could use this flaw to crash the system or escalate their privileges on the system. This flaw affects the Linux kernel versions prior to 5.13-rc5.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-150_72-default-7-2.1
SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-150_75-default-4-2.1
Ссылки

Описание

A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-150_72-default-7-2.1
SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-150_75-default-4-2.1
Ссылки

Описание

A flaw was found in the "Routing decision" classifier in the Linux kernel's Traffic Control networking subsystem in the way it handled changing of classification filters, leading to a use-after-free condition. This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-150_72-default-7-2.1
SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-150_75-default-4-2.1
Ссылки

Описание

** DISPUTED ** In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. NOTE: the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the length validation was added solely for robustness in the face of anomalous host OS behavior.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-150_72-default-7-2.1
SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-150_75-default-4-2.1
Ссылки
Уязвимость SUSE-SU-2021:3371-1