SUSE SLES15 Security Update : kernel (SUSE-SU-2023:4095-1)

high Nessus Plugin ID 183287

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4095-1 advisory.

The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

- CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (bsc#1212703).
- CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges on the system.
(bsc#1215150)
- CVE-2023-4389: Fixed a a double decrement of the reference count flaw in the btrfs filesystem a double decrement of the reference count, which may have allowed a local attacker with user privilege to crash the system or may lead to leaked internal kernel information. (bsc#1214351)
- CVE-2023-4921: Fixed a use-after-free vulnerability in the sch_qfq component which could be exploited to achieve local privilege escalation. (bsc#1215275)
- CVE-2023-23454: Fixed a type-confusion in the CBQ network scheduler (bsc#1207036).
- CVE-2023-4004: Fixed improper element removal netfilter nft_set_pipapo (bsc#1213812).
- CVE-2023-4622: Fixed a use-after-free vulnerability in the af_unix component which could be exploited to achieve local privilege escalation. (bsc#1215117)
- CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
- CVE-2020-36766: Fixed an issue in drivers/media/cec/core/cec-api.c which could leaks one byte of kernel memory on specific hardware to unprivileged users. (bsc#1215299)
- CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs. This flaw could allow a local attacker to crash the system due to a race problem, possibly leading to a kernel information leak.
(bsc#1210169)
- CVE-2023-2177: Fixed a null pointer dereference issue in the sctp network protocol which could allow a user to crash the system or potentially cause a denial of service. (bsc#1210643)
- CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
- CVE-2023-40283: Fixed use-after-free in l2cap_sock_ready_cb (bsc#1214233).
- CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 183287

File Name: suse_SU-2023-4095-1.nasl

Version: 1.1

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 10/18/2023

Updated: 9/24/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2023-4921

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:dlm-kmp-default, p-cpe:/a:novell:suse_linux:kernel-default-livepatch, p-cpe:/a:novell:suse_linux:kernel-64kb, p-cpe:/a:novell:suse_linux:kernel-syms, p-cpe:/a:novell:suse_linux:kernel-default-livepatch-devel, p-cpe:/a:novell:suse_linux:cluster-md-kmp-default, p-cpe:/a:novell:suse_linux:reiserfs-kmp-default, p-cpe:/a:novell:suse_linux:kernel-source, p-cpe:/a:novell:suse_linux:kernel-preempt-devel, p-cpe:/a:novell:suse_linux:ocfs2-kmp-default, p-cpe:/a:novell:suse_linux:kernel-default-base, p-cpe:/a:novell:suse_linux:kernel-macros, p-cpe:/a:novell:suse_linux:kernel-livepatch-5_3_18-150300_59_138-default, p-cpe:/a:novell:suse_linux:kernel-default, p-cpe:/a:novell:suse_linux:kernel-zfcpdump, p-cpe:/a:novell:suse_linux:kernel-preempt, p-cpe:/a:novell:suse_linux:kernel-default-devel, p-cpe:/a:novell:suse_linux:kernel-devel, p-cpe:/a:novell:suse_linux:kernel-obs-build, p-cpe:/a:novell:suse_linux:kernel-64kb-devel, p-cpe:/a:novell:suse_linux:gfs2-kmp-default, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/17/2023

Vulnerability Publication Date: 8/15/2022

Reference Information

CVE: CVE-2020-36766, CVE-2023-1192, CVE-2023-1206, CVE-2023-1859, CVE-2023-2177, CVE-2023-23454, CVE-2023-4004, CVE-2023-40283, CVE-2023-42753, CVE-2023-4389, CVE-2023-4622, CVE-2023-4623, CVE-2023-4921

SuSE: SUSE-SU-2023:4095-1

Detections

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