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SUSE-SU-2023:3838-1

Опубликовано: 27 сент. 2023
Источник: suse-cvrf

Описание

Security update for the Linux Kernel (Live Patch 40 for SLE 15 SP1)

This update for the Linux Kernel 4.12.14-150100_197_145 fixes several issues.

The following security issues were fixed:

  • CVE-2023-3776: Fixed improper refcount update in cls_fw leads to use-after-free (bsc#1215119).
  • CVE-2023-1829: Fixed a use-after-free vulnerability in the control index filter (tcindex) (bsc#1210619).
  • CVE-2023-3609: Fixed reference counter leak leading to overflow in net/sched (bsc#1213587).
  • CVE-2023-3812: Fixed an out-of-bounds memory access flaw in the TUN/TAP device driver functionality that could allow a local user to crash or potentially escalate their privileges on the system (bsc#1213706).

Список пакетов

SUSE Linux Enterprise Live Patching 15 SP1
kernel-livepatch-4_12_14-150100_197_145-default-6-150100.2.1

Ссылки

Описание

A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) can be exploited to achieve local privilege escalation. The tcindex_delete function which does not properly deactivate filters in case of a perfect hashes while deleting the underlying structure which can later lead to double freeing the structure. A local attacker user can use this vulnerability to elevate its privileges to root. We recommend upgrading past commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-150100_197_145-default-6-150100.2.1
Ссылки

Описание

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-150100_197_145-default-6-150100.2.1
Ссылки

Описание

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-150100_197_145-default-6-150100.2.1
Ссылки

Описание

An out-of-bounds memory access flaw was found in the Linux kernel's TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-150100_197_145-default-6-150100.2.1
Ссылки
Уязвимость SUSE-SU-2023:3838-1