{"schema_version":"1.7.3","id":"SUSE-SU-2023:3421-1","published":"2023-08-24T08:55:49Z","modified":"2026-02-04T04:23:04.734926Z","related":["CVE-2022-40982","CVE-2023-0459","CVE-2023-20569","CVE-2023-20593","CVE-2023-2156","CVE-2023-2985","CVE-2023-3117","CVE-2023-31248","CVE-2023-3390","CVE-2023-35001","CVE-2023-3567","CVE-2023-3609","CVE-2023-3611","CVE-2023-3776","CVE-2023-3812"],"upstream":["CVE-2022-40982","CVE-2023-0459","CVE-2023-20569","CVE-2023-20593","CVE-2023-2156","CVE-2023-2985","CVE-2023-3117","CVE-2023-31248","CVE-2023-3390","CVE-2023-35001","CVE-2023-3567","CVE-2023-3609","CVE-2023-3611","CVE-2023-3776","CVE-2023-3812"],"summary":"Security update for the Linux Kernel","details":"\n\nThe SUSE Linux Enterprise 15 SP3 RT kernel was updated to receive various security and bugfixes.\n\n\nThe following security bugs were fixed:\n\n- CVE-2023-2156: Fixed IPv6 RPL Protocol Reachable Assertion Denial-of-Service Vulnerability (bsc#1211131).\n- CVE-2022-40982: Fixed transient execution attack called 'Gather Data Sampling' (bsc#1206418).\n- CVE-2023-0459: Fixed information leak in __uaccess_begin_nospec (bsc#1211738).\n- CVE-2023-20569: Fixed side channel attack ‘Inception’ or ‘RAS Poisoning’ (bsc#1213287).\n- CVE-2023-20593: Fixed a ZenBleed issue in 'Zen 2' CPUs that could allow an attacker to potentially access sensitive information (bsc#1213286).\n- CVE-2023-2985: Fixed an use-after-free vulnerability in hfsplus_put_super in fs/hfsplus/super.c that could allow a local user to cause a denial of service (bsc#1211867).\n- CVE-2023-3117: Fixed an use-after-free vulnerability in the netfilter subsystem when processing named and anonymous sets in batch requests that could allow a local user with CAP_NET_ADMIN capability to crash or potentially escalate their privileges on the system (bsc#1213245).\n- CVE-2023-31248: Fixed an use-after-free vulnerability in nft_chain_lookup_byid that could allow a local attacker to escalate their privilege (bsc#1213061).\n- 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#1212846).\n- CVE-2023-35001: Fixed an out-of-bounds memory access flaw in nft_byteorder that could allow a local attacker to escalate their privilege (bsc#1213059).\n- CVE-2023-3567: Fixed a use-after-free in vcs_read in drivers/tty/vt/vc_screen.c (bsc#1213167).\n- CVE-2023-3609: Fixed reference counter leak leading to  overflow in net/sched (bsc#1213586).\n- CVE-2023-3611: Fixed an out-of-bounds write in net/sched sch_qfq(bsc#1213585).\n- CVE-2023-3776: Fixed improper refcount update in  cls_fw leads to use-after-free (bsc#1213588).\n- 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#1213543).\n\nThe following non-security bugs were fixed:\n\n- arm: cpu: switch to arch_cpu_finalize_init() (bsc#1206418).\n- get module prefix from kmod (bsc#1212835).\n- remove more packaging cruft for sle < 12 sp3\n- block, bfq: fix division by zero error on zero wsum (bsc#1213653).\n- init, x86: move mem_encrypt_init() into arch_cpu_finalize_init() (bsc#1206418).\n- init: invoke arch_cpu_finalize_init() earlier (bsc#1206418).\n- init: provide arch_cpu_finalize_init() (bsc#1206418).\n- init: remove check_bugs() leftovers (bsc#1206418).\n- jbd2: export jbd2_journal_[grab|put]_journal_head (bsc#1199304).\n- kernel-binary.spec.in: remove superfluous %% in supplements fixes: 02b7735e0caf ('rpm/kernel-binary.spec.in: add enhances and supplements tags to in-tree kmps')\n- kernel-docs: add buildrequires on python3-base when using python3 the python3 binary is provided by python3-base.\n- kernel-docs: use python3 together with python3-sphinx (bsc#1212741).\n- keys: do not cache key in task struct if key is requested from kernel thread (bsc#1213354).\n- lockdep: add preemption enabled/disabled assertion apis (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: add __always_inline annotation to __down_read_common() and inlined callers (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: allow slowpath writer to ignore handoff bit if not set by first waiter (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: always try to wake waiters in out_nolock path (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: better collate rwsem_read_trylock() (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: conditionally wake waiters in reader/writer slowpaths (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: disable preemption for spinning region (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: disable preemption in all down_read*() and up_read() code paths (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: disable preemption in all down_write*() and up_write() code paths (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: disable preemption while trying for rwsem lock (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: enable reader optimistic lock stealing (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: fix comment typo (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: fix comments about reader optimistic lock stealing conditions (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: fold __down_{read,write}*() (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: introduce rwsem_write_trylock() (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: make handoff bit handling more consistent (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: no need to check for handoff bit if wait queue empty (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: optimize down_read_trylock() under highly contended case (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: pass the current atomic count to rwsem_down_read_slowpath() (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: prevent non-first waiter from spinning in down_write() slowpath (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: prevent potential lock starvation (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: remove an unused parameter of rwsem_wake() (bsc#1207270 jsc#ped-4567).\n- locking/rwsem: remove reader optimistic spinning (bsc#1207270 jsc#ped-4567).\n- locking: add missing __sched attributes (bsc#1207270 jsc#ped-4567).\n- locking: remove rcu_read_{,un}lock() for preempt_{dis,en}able() (bsc#1207270 jsc#ped-4567).\n- net/sched: sch_qfq: refactor parsing of netlink parameters (bsc#1213585).\n- net: mana: add support for vlan tagging (bsc#1212301).\n- ocfs2: fix a deadlock when commit trans (bsc#1199304).\n- ocfs2: fix defrag path triggering jbd2 assert (bsc#1199304).\n- ocfs2: fix race between searching chunks and release journal_head from buffer_head (bsc#1199304).\n- rpm/check-for-config-changes: ignore also pahole_has_* we now also have options like config_pahole_has_lang_exclude.\n- rpm/check-for-config-changes: ignore also riscv_isa_* and dynamic_sigframe they depend on config_toolchain_has_*.\n- rwsem-rt: implement down_read_interruptible (bsc#1207270, jsc#ped-4567, sle realtime extension).\n- rwsem: implement down_read_interruptible (bsc#1207270 jsc#ped-4567).\n- rwsem: implement down_read_killable_nested (bsc#1207270 jsc#ped-4567).\n- ubi: fix failure attaching when vid_hdr offset equals to (sub)page size (bsc#1210584).\n- ubi: ensure that vid header offset + vid header size <= alloc, size (bsc#1210584).\n- usrmerge: adjust module path in the kernel sources (bsc#1212835).\n- x86/cpu: switch to arch_cpu_finalize_init() (bsc#1206418).\n- x86/fpu: remove cpuinfo argument from init functions (bsc#1206418).\n- x86/microcode/AMD: Make stub function static inline (bsc#1213868).\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":"5.3.18-150300.138.3"}]}],"ecosystem_specific":{"binaries":[{"kernel-rt":"5.3.18-150300.138.3"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2023:3421-1.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":"5.3.18-150300.138.3"}]}],"ecosystem_specific":{"binaries":[{"kernel-rt":"5.3.18-150300.138.3"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2023:3421-1.json"}}],"references":[{"type":"ADVISORY","url":"https://www.suse.com/support/update/announcement/2023/suse-su-20233421-1/"},{"type":"REPORT","url":"https://bugzilla.suse.com/1199304"},{"type":"REPORT","url":"https://bugzilla.suse.com/1206418"},{"type":"REPORT","url":"https://bugzilla.suse.com/1207270"},{"type":"REPORT","url":"https://bugzilla.suse.com/1210584"},{"type":"REPORT","url":"https://bugzilla.suse.com/1211131"},{"type":"REPORT","url":"https://bugzilla.suse.com/1211738"},{"type":"REPORT","url":"https://bugzilla.suse.com/1211867"},{"type":"REPORT","url":"https://bugzilla.suse.com/1212301"},{"type":"REPORT","url":"https://bugzilla.suse.com/1212741"},{"type":"REPORT","url":"https://bugzilla.suse.com/1212835"},{"type":"REPORT","url":"https://bugzilla.suse.com/1212846"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213059"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213061"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213167"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213245"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213286"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213287"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213354"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213543"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213585"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213586"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213588"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213653"},{"type":"REPORT","url":"https://bugzilla.suse.com/1213868"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2022-40982"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-0459"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-20569"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-20593"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-2156"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-2985"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-3117"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-31248"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-3390"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-35001"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-3567"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-3609"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-3611"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-3776"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2023-3812"}]}