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SUSE-SU-2023:4142-1

Dashboard / Vulnerabilities / SUSE-SU-2023:4142-1

SUSE-SU-2023:4142-1

Published: 20 Oct 2023Last Modified: 4 Feb 2026

Upstream:

Aliases:

Summary: Security update for the Linux Kernel

Details: The SUSE Linux Enterprise 15 SP3 RT kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2023-4389: Fixed a reference counting issue in the Btrfs filesystem that could be exploited in order to leak internal kernel information or crash the system (bsc#1214351). - 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 (bsc#1215150). - 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-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275). - CVE-2023-4004: Fixed improper element removal netfilter nft_set_pipapo (bsc#1213812). - CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets 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 a potential information leak in in the CEC driver (bsc#1215299). - CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (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 (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). The following non-security bugs were fixed: - bnx2x: new flag for track HW resource allocation (bsc#1202845 bsc#1215322). - check-for-config-changes: ignore BUILTIN_RETURN_ADDRESS_STRIPS_PAC (bsc#1214380). gcc7 on SLE 15 does not support this while later gcc does. - locking/rwsem: Disable reader optimistic spinning (bnc#1176588). - mkspec: Allow unsupported KMPs (bsc#1214386) - scsi: qedf: Add synchronization between I/O completions and abort (bsc#1210658). - x86/pkeys: Revert a5eff7259790 ('x86/pkeys: Add PKRU value to init_fpstate') (bsc#1215356). - x86/srso: Do not probe microcode in a guest (git-fixes). - x86/srso: Fix SBPB enablement for spec_rstack_overflow=off (git-fixes). - x86/srso: Fix srso_show_state() side effect (git-fixes). - x86/srso: Set CPUID feature bits independently of bug or mitigation status (git-fixes).

Affected packages

Package

Name: kernel-rt

Purl: pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.1

Affected ranges

Type: ECOSYSTEM

Events:

Introduced- 0

Fixed -5.3.18-150300.144.1

Affected versions

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High