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SUSE-SU-2023:4308-1

Опубликовано: 31 окт. 2023
Источник: suse-cvrf

Описание

Security update for the Linux Kernel (Live Patch 1 for SLE 15 SP5)

This update for the Linux Kernel 5.14.21-150500_55_7 fixes several issues.

The following security issues were fixed:

  • CVE-2023-4147: Fixed use-after-free in nf_tables_newrule (bsc#1215118).
  • CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215440).
  • CVE-2023-4004: Fixed improper element removal netfilter nft_set_pipapo (bsc#1214812).
  • CVE-2023-3390: Fixed an use-after-free vulnerability in the netfilter subsystem in net/netfilter/nf_tables_api.c that could allow a local attacker with user access to cause a privilege escalation issue (bsc#1212934).

Список пакетов

SUSE Linux Enterprise Live Patching 15 SP4
kernel-livepatch-5_14_21-150400_24_66-default-5-150400.2.1
SUSE Linux Enterprise Live Patching 15 SP5
kernel-livepatch-5_14_21-150500_55_7-default-4-150500.2.1

Ссылки

Описание

A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue. We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_66-default-5-150400.2.1
SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_55_7-default-4-150500.2.1
Ссылки

Описание

A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their privileges on the system.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_66-default-5-150400.2.1
SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_55_7-default-4-150500.2.1
Ссылки

Описание

A use-after-free flaw was found in the Linux kernel's Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. This flaw allows a local user to crash or escalate their privileges on the system.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_66-default-5-150400.2.1
SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_55_7-default-4-150500.2.1
Ссылки

Описание

A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation. If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free. We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_66-default-5-150400.2.1
SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_55_7-default-4-150500.2.1
Ссылки
Уязвимость SUSE-SU-2023:4308-1