{"schema_version":"1.7.3","id":"SUSE-SU-2023:4142-1","published":"2023-10-20T09:35:16Z","modified":"2026-02-04T04:00:03.872628Z","related":["CVE-2020-36766","CVE-2023-1192","CVE-2023-1206","CVE-2023-1859","CVE-2023-2177","CVE-2023-4004","CVE-2023-40283","CVE-2023-42753","CVE-2023-4389","CVE-2023-4622","CVE-2023-4623","CVE-2023-4881","CVE-2023-4921"],"upstream":["CVE-2020-36766","CVE-2023-1192","CVE-2023-1206","CVE-2023-1859","CVE-2023-2177","CVE-2023-4004","CVE-2023-40283","CVE-2023-42753","CVE-2023-4389","CVE-2023-4622","CVE-2023-4623","CVE-2023-4881","CVE-2023-4921"],"summary":"Security update for the Linux Kernel","details":"\nThe SUSE Linux Enterprise 15 SP3 RT kernel was updated to receive various security and bugfixes.\n\nThe following security bugs were fixed:\n\n- 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).\n- 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).\n- 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).\n- 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).\n- CVE-2023-4004: Fixed improper element removal netfilter nft_set_pipapo (bsc#1213812).\n- 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).\n- 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).\n- CVE-2020-36766: Fixed a potential information leak in in the CEC driver (bsc#1215299).\n- CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).\n- 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).\n- 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).\n- CVE-2023-40283: Fixed use-after-free in l2cap_sock_ready_cb (bsc#1214233).\n- CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).\n\nThe following non-security bugs were fixed:\n\n- bnx2x: new flag for track HW resource allocation (bsc#1202845 bsc#1215322).\n- check-for-config-changes: ignore BUILTIN_RETURN_ADDRESS_STRIPS_PAC (bsc#1214380). gcc7 on SLE 15 does not support this while later gcc does.\n- locking/rwsem: Disable reader optimistic spinning (bnc#1176588).\n- mkspec: Allow unsupported KMPs (bsc#1214386)\n- scsi: qedf: Add synchronization between I/O completions and abort (bsc#1210658).\n- x86/pkeys: Revert a5eff7259790 ('x86/pkeys: Add PKRU value to init_fpstate') (bsc#1215356).\n- x86/srso: Do not probe microcode in a guest (git-fixes).\n- x86/srso: Fix SBPB enablement for spec_rstack_overflow=off (git-fixes).\n- x86/srso: Fix srso_show_state() side effect (git-fixes).\n- x86/srso: Set CPUID feature bits independently of bug or mitigation status (git-fixes).\n","affected":[{"package":{"name":"kernel-rt","ecosystem":"SUSE:Linux Enterprise Micro 5.1","purl":"pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3.18-150300.144.1"}]}],"ecosystem_specific":{"binaries":[{"kernel-rt":"5.3.18-150300.144.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2023:4142-1.json"}},{"package":{"name":"kernel-rt","ecosystem":"SUSE:Linux Enterprise Micro 5.2","purl":"pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3.18-150300.144.1"}]}],"ecosystem_specific":{"binaries":[{"kernel-rt":"5.3.18-150300.144.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2023:4142-1.json"}}],"references":[{"type":"ADVISORY","url":"https://www.suse.com/support/update/announcement/2023/suse-su-20234142-1/"},{"type":"REPORT","url":"https://bugzilla.suse.com/1176588"},{"type":"REPORT","url":"https://bugzilla.suse.com/1202845"},{"type":"REPORT","url":"https://bugzilla.suse.com/1207270"},{"type":"REPORT","url":"https://bugzilla.suse.com/1208995"},{"type":"REPORT","url":"https://bugzilla.suse.com/1210169"},{"type":"REPORT","url":"https://bugzilla.suse.com/1210643"},{"type":"REPORT","url":"https://bugzilla.suse.com/1210658"},{"type":"REPORT","url":"https://bugzilla.suse.com/1212703"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213812"},{"type":"REPORT","url":"https://bugzilla.suse.com/1214233"},{"type":"REPORT","url":"https://bugzilla.suse.com/1214351"},{"type":"REPORT","url":"https://bugzilla.suse.com/1214380"},{"type":"REPORT","url":"https://bugzilla.suse.com/1214386"},{"type":"REPORT","url":"https://bugzilla.suse.com/1215115"},{"type":"REPORT","url":"https://bugzilla.suse.com/1215117"},{"type":"REPORT","url":"https://bugzilla.suse.com/1215150"},{"type":"REPORT","url":"https://bugzilla.suse.com/1215221"},{"type":"REPORT","url":"https://bugzilla.suse.com/1215275"},{"type":"REPORT","url":"https://bugzilla.suse.com/1215299"},{"type":"REPORT","url":"https://bugzilla.suse.com/1215322"},{"type":"REPORT","url":"https://bugzilla.suse.com/1215356"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2020-36766"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-1192"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-1206"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-1859"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-2177"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-4004"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-40283"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-42753"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-4389"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-4622"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-4623"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-4881"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-4921"}]}