CVE-2023-54288 SUSE CVE security@suse.de SUSE Security Team SUSE CVE-2023-54288 Interim 1 1 2026-03-05T03:03:33Z current 2026-03-05T03:03:33Z 2026-03-05T03:03:33Z cve-database/bin/generate-cvrf-cve.pl 2020-12-27T01:00:00Z CVE-2023-54288 In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fortify the spinlock against deadlock by interrupt In the function ieee80211_tx_dequeue() there is a particular locking sequence: begin: spin_lock(&local->queue_stop_reason_lock); q_stopped = local->queue_stop_reasons[q]; spin_unlock(&local->queue_stop_reason_lock); However small the chance (increased by ftracetest), an asynchronous interrupt can occur in between of spin_lock() and spin_unlock(), and the interrupt routine will attempt to lock the same &local->queue_stop_reason_lock again. This will cause a costly reset of the CPU and the wifi device or an altogether hang in the single CPU and single core scenario. The only remaining spin_lock(&local->queue_stop_reason_lock) that did not disable interrupts was patched, which should prevent any deadlocks on the same CPU/core and the same wifi device. This is the probable trace of the deadlock: kernel: ================================ kernel: WARNING: inconsistent lock state kernel: 6.3.0-rc6-mt-20230401-00001-gf86822a1170f #4 Tainted: G W kernel: -------------------------------- kernel: inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. kernel: kworker/5:0/25656 [HC0[0]:SC0[0]:HE1:SE1] takes: kernel: ffff9d6190779478 (&local->queue_stop_reason_lock){+.?.}-{2:2}, at: return_to_handler+0x0/0x40 kernel: {IN-SOFTIRQ-W} state was registered at: kernel: lock_acquire+0xc7/0x2d0 kernel: _raw_spin_lock+0x36/0x50 kernel: ieee80211_tx_dequeue+0xb4/0x1330 [mac80211] kernel: iwl_mvm_mac_itxq_xmit+0xae/0x210 [iwlmvm] kernel: iwl_mvm_mac_wake_tx_queue+0x2d/0xd0 [iwlmvm] kernel: ieee80211_queue_skb+0x450/0x730 [mac80211] kernel: __ieee80211_xmit_fast.constprop.66+0x834/0xa50 [mac80211] kernel: __ieee80211_subif_start_xmit+0x217/0x530 [mac80211] kernel: ieee80211_subif_start_xmit+0x60/0x580 [mac80211] kernel: dev_hard_start_xmit+0xb5/0x260 kernel: __dev_queue_xmit+0xdbe/0x1200 kernel: neigh_resolve_output+0x166/0x260 kernel: ip_finish_output2+0x216/0xb80 kernel: __ip_finish_output+0x2a4/0x4d0 kernel: ip_finish_output+0x2d/0xd0 kernel: ip_output+0x82/0x2b0 kernel: ip_local_out+0xec/0x110 kernel: igmpv3_sendpack+0x5c/0x90 kernel: igmp_ifc_timer_expire+0x26e/0x4e0 kernel: call_timer_fn+0xa5/0x230 kernel: run_timer_softirq+0x27f/0x550 kernel: __do_softirq+0xb4/0x3a4 kernel: irq_exit_rcu+0x9b/0xc0 kernel: sysvec_apic_timer_interrupt+0x80/0xa0 kernel: asm_sysvec_apic_timer_interrupt+0x1f/0x30 kernel: _raw_spin_unlock_irqrestore+0x3f/0x70 kernel: free_to_partial_list+0x3d6/0x590 kernel: __slab_free+0x1b7/0x310 kernel: kmem_cache_free+0x52d/0x550 kernel: putname+0x5d/0x70 kernel: do_sys_openat2+0x1d7/0x310 kernel: do_sys_open+0x51/0x80 kernel: __x64_sys_openat+0x24/0x30 kernel: do_syscall_64+0x5c/0x90 kernel: entry_SYSCALL_64_after_hwframe+0x72/0xdc kernel: irq event stamp: 5120729 kernel: hardirqs last enabled at (5120729): [<ffffffff9d149936>] trace_graph_return+0xd6/0x120 kernel: hardirqs last disabled at (5120728): [<ffffffff9d149950>] trace_graph_return+0xf0/0x120 kernel: softirqs last enabled at (5069900): [<ffffffff9cf65b60>] return_to_handler+0x0/0x40 kernel: softirqs last disabled at (5067555): [<ffffffff9cf65b60>] return_to_handler+0x0/0x40 kernel: other info that might help us debug this: kernel: Possible unsafe locking scenario: kernel: CPU0 kernel: ---- kernel: lock(&local->queue_stop_reason_lock); kernel: <Interrupt> kernel: lock(&local->queue_stop_reason_lock); kernel: *** DEADLOCK *** kernel: 8 locks held by kworker/5:0/25656: kernel: #0: ffff9d618009d138 ((wq_completion)events_freezable){+.+.}-{0:0}, at: process_one_work+0x1ca/0x530 kernel: #1: ffffb1ef4637fe68 ((work_completion)(&local->restart_work)){+.+.}-{0:0}, at: process_one_work+0x1ce/0x530 kernel: #2: ffffffff9f166548 (rtnl_mutex){+.+.}-{3:3}, at: return_to_handler+0x0/0x40 kernel: #3: ffff9d619 ---truncated--- The CVRF data is 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component of SUSE Linux Micro 6.0 kernel-macros as a component of SUSE Linux Micro 6.0 kernel-source as a component of SUSE Linux Micro 6.0 kernel-devel-rt as a component of SUSE Linux Micro 6.0 kernel-source-rt as a component of SUSE Linux Micro 6.0 kernel-default as a component of SUSE Linux Micro 6.1 kernel-devel as a component of SUSE Linux Micro 6.1 kernel-macros as a component of SUSE Linux Micro 6.1 kernel-source as a component of SUSE Linux Micro 6.1 kernel-devel-rt as a component of SUSE Linux Micro 6.1 kernel-source-rt as a component of SUSE Linux Micro 6.1 kernel-default as a component of SUSE Linux Micro 6.2 kernel-devel as a component of SUSE Linux Micro 6.2 kernel-macros as a component of SUSE Linux Micro 6.2 kernel-source as a component of SUSE Linux Micro 6.2 kernel-default as a component of SUSE Manager Proxy LTS 4.3 kernel-default-devel as a component of SUSE Manager Proxy LTS 4.3 kernel-devel as a component of SUSE Manager Proxy LTS 4.3 kernel-macros as a component of SUSE Manager Proxy LTS 4.3 kernel-source as a component of SUSE Manager Proxy LTS 4.3 kernel-default as a component of SUSE Manager Retail Branch Server LTS 4.3 kernel-default-devel as a component of SUSE Manager Retail Branch Server LTS 4.3 kernel-devel as a component of SUSE Manager Retail Branch Server LTS 4.3 kernel-macros as a component of SUSE Manager Retail Branch Server LTS 4.3 kernel-source as a component of SUSE Manager Retail Branch Server LTS 4.3 kernel-default as a component of SUSE Manager Server LTS 4.3 kernel-default-devel as a component of SUSE Manager Server LTS 4.3 kernel-devel as a component of SUSE Manager Server LTS 4.3 kernel-macros as a component of SUSE Manager Server LTS 4.3 kernel-source as a component of SUSE Manager Server LTS 4.3 kernel-devel-rt as a component of SUSE Real Time Module 15 SP6 kernel-source-rt as a component of SUSE Real Time Module 15 SP6 kernel-devel-rt as a component of SUSE Real Time Module 15 SP7 kernel-source-rt as a component of SUSE Real Time Module 15 SP7 cluster-md-kmp-default as a component of openSUSE Leap 15.6 dlm-kmp-default as a component of openSUSE Leap 15.6 gfs2-kmp-default as a component of openSUSE Leap 15.6 kernel-default as a component of openSUSE Leap 15.6 kernel-default-devel as a component of openSUSE Leap 15.6 kernel-default-extra as a component of openSUSE Leap 15.6 kernel-default-livepatch as a component of openSUSE Leap 15.6 kernel-default-livepatch-devel as a component of openSUSE Leap 15.6 kernel-default-optional as a component of openSUSE Leap 15.6 kernel-default-vdso as a component of openSUSE Leap 15.6 kselftests-kmp-default as a component of openSUSE Leap 15.6 ocfs2-kmp-default as a component of openSUSE Leap 15.6 reiserfs-kmp-default as a component of openSUSE Leap 15.6 kernel-devel as a component of openSUSE Leap 15.6 kernel-macros as a component of openSUSE Leap 15.6 kernel-source as a component of openSUSE Leap 15.6 kernel-source-vanilla as a component of openSUSE Leap 15.6 kernel-devel-azure as a component of openSUSE Leap 15.6 kernel-source-azure as a component of openSUSE Leap 15.6 kernel-devel-rt as a component of openSUSE Leap 15.6 kernel-source-rt as a component of openSUSE Leap 15.6 In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fortify the spinlock against deadlock by interrupt In the function ieee80211_tx_dequeue() there is a particular locking sequence: begin: spin_lock(&local->queue_stop_reason_lock); q_stopped = local->queue_stop_reasons[q]; spin_unlock(&local->queue_stop_reason_lock); However small the chance (increased by ftracetest), an asynchronous interrupt can occur in between of spin_lock() and spin_unlock(), and the interrupt routine will attempt to lock the same &local->queue_stop_reason_lock again. This will cause a costly reset of the CPU and the wifi device or an altogether hang in the single CPU and single core scenario. The only remaining spin_lock(&local->queue_stop_reason_lock) that did not disable interrupts was patched, which should prevent any deadlocks on the same CPU/core and the same wifi device. This is the probable trace of the deadlock: kernel: ================================ kernel: WARNING: inconsistent lock state kernel: 6.3.0-rc6-mt-20230401-00001-gf86822a1170f #4 Tainted: G W kernel: -------------------------------- kernel: inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. kernel: kworker/5:0/25656 [HC0[0]:SC0[0]:HE1:SE1] takes: kernel: ffff9d6190779478 (&local->queue_stop_reason_lock){+.?.}-{2:2}, at: return_to_handler+0x0/0x40 kernel: {IN-SOFTIRQ-W} state was registered at: kernel: lock_acquire+0xc7/0x2d0 kernel: _raw_spin_lock+0x36/0x50 kernel: ieee80211_tx_dequeue+0xb4/0x1330 [mac80211] kernel: iwl_mvm_mac_itxq_xmit+0xae/0x210 [iwlmvm] kernel: iwl_mvm_mac_wake_tx_queue+0x2d/0xd0 [iwlmvm] kernel: ieee80211_queue_skb+0x450/0x730 [mac80211] kernel: __ieee80211_xmit_fast.constprop.66+0x834/0xa50 [mac80211] kernel: __ieee80211_subif_start_xmit+0x217/0x530 [mac80211] kernel: ieee80211_subif_start_xmit+0x60/0x580 [mac80211] kernel: dev_hard_start_xmit+0xb5/0x260 kernel: __dev_queue_xmit+0xdbe/0x1200 kernel: neigh_resolve_output+0x166/0x260 kernel: ip_finish_output2+0x216/0xb80 kernel: __ip_finish_output+0x2a4/0x4d0 kernel: ip_finish_output+0x2d/0xd0 kernel: ip_output+0x82/0x2b0 kernel: ip_local_out+0xec/0x110 kernel: igmpv3_sendpack+0x5c/0x90 kernel: igmp_ifc_timer_expire+0x26e/0x4e0 kernel: call_timer_fn+0xa5/0x230 kernel: run_timer_softirq+0x27f/0x550 kernel: __do_softirq+0xb4/0x3a4 kernel: irq_exit_rcu+0x9b/0xc0 kernel: sysvec_apic_timer_interrupt+0x80/0xa0 kernel: asm_sysvec_apic_timer_interrupt+0x1f/0x30 kernel: _raw_spin_unlock_irqrestore+0x3f/0x70 kernel: free_to_partial_list+0x3d6/0x590 kernel: __slab_free+0x1b7/0x310 kernel: kmem_cache_free+0x52d/0x550 kernel: putname+0x5d/0x70 kernel: do_sys_openat2+0x1d7/0x310 kernel: do_sys_open+0x51/0x80 kernel: __x64_sys_openat+0x24/0x30 kernel: do_syscall_64+0x5c/0x90 kernel: entry_SYSCALL_64_after_hwframe+0x72/0xdc kernel: irq event stamp: 5120729 kernel: hardirqs last enabled at (5120729): [<ffffffff9d149936>] trace_graph_return+0xd6/0x120 kernel: hardirqs last disabled at (5120728): [<ffffffff9d149950>] trace_graph_return+0xf0/0x120 kernel: softirqs last enabled at (5069900): [<ffffffff9cf65b60>] return_to_handler+0x0/0x40 kernel: softirqs last disabled at (5067555): [<ffffffff9cf65b60>] return_to_handler+0x0/0x40 kernel: other info that might help us debug this: kernel: Possible unsafe locking scenario: kernel: CPU0 kernel: ---- kernel: lock(&local->queue_stop_reason_lock); kernel: <Interrupt> kernel: lock(&local->queue_stop_reason_lock); kernel: *** DEADLOCK *** kernel: 8 locks held by kworker/5:0/25656: kernel: #0: ffff9d618009d138 ((wq_completion)events_freezable){+.+.}-{0:0}, at: process_one_work+0x1ca/0x530 kernel: #1: ffffb1ef4637fe68 ((work_completion)(&local->restart_work)){+.+.}-{0:0}, at: process_one_work+0x1ce/0x530 kernel: #2: ffffffff9f166548 (rtnl_mutex){+.+.}-{3:3}, at: return_to_handler+0x0/0x40 kernel: #3: ffff9d619 ---truncated--- CVE-2023-54288 SLES-LTSS-TERADATA 15 SP2:kernel-default SLES-LTSS-TERADATA 15 SP2:kernel-source SUSE Linux Enterprise High Availability Extension 15 SP3:cluster-md-kmp-default SUSE Linux Enterprise High Availability Extension 15 SP3:dlm-kmp-default SUSE Linux Enterprise High Availability Extension 15 SP3:gfs2-kmp-default SUSE Linux Enterprise High Availability Extension 15 SP3:kernel-default SUSE Linux Enterprise High Availability Extension 15 SP3:kernel-source SUSE Linux Enterprise High Availability Extension 15 SP3:ocfs2-kmp-default SUSE Linux Enterprise High Availability Extension 15 SP6:kernel-default SUSE Linux Enterprise High Availability Extension 15 SP6:kernel-source SUSE Linux Enterprise High Availability Extension 15 SP7:cluster-md-kmp-default SUSE Linux Enterprise High Availability Extension 15 SP7:dlm-kmp-default SUSE Linux Enterprise High Availability Extension 15 SP7:gfs2-kmp-default SUSE Linux Enterprise High Availability Extension 15 SP7:kernel-default SUSE Linux Enterprise High 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Server 16.0:kernel-macros SUSE Linux Enterprise Server 16.0:kernel-source SUSE Linux Enterprise Server 16.0:kernel-source-azure SUSE Linux Enterprise Server 16.0:kernel-source-vanilla SUSE Linux Enterprise Server Teradata 12 SP3:kernel-default SUSE Linux Enterprise Server Teradata 12 SP3:kernel-source SUSE Linux Enterprise Server Teradata 15 SP4:kernel-default SUSE Linux Enterprise Server Teradata 15 SP4:kernel-source SUSE Linux Enterprise Server for SAP Applications 15 SP3:kernel-default SUSE Linux Enterprise Server for SAP Applications 15 SP3:kernel-default-devel SUSE Linux Enterprise Server for SAP Applications 15 SP3:kernel-devel SUSE Linux Enterprise Server for SAP Applications 15 SP3:kernel-macros SUSE Linux Enterprise Server for SAP Applications 15 SP3:kernel-source SUSE Linux Enterprise Server for SAP Applications 15 SP3:reiserfs-kmp-default SUSE Linux Enterprise Server for SAP Applications 15 SP4:kernel-default SUSE Linux Enterprise Server for SAP Applications 15 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6.1:kernel-devel SUSE Linux Micro 6.1:kernel-devel-rt SUSE Linux Micro 6.1:kernel-macros SUSE Linux Micro 6.1:kernel-source SUSE Linux Micro 6.1:kernel-source-rt SUSE Linux Micro 6.2:kernel-default SUSE Linux Micro 6.2:kernel-devel SUSE Linux Micro 6.2:kernel-macros SUSE Linux Micro 6.2:kernel-source SUSE Manager Proxy LTS 4.3:kernel-default SUSE Manager Proxy LTS 4.3:kernel-default-devel SUSE Manager Proxy LTS 4.3:kernel-devel SUSE Manager Proxy LTS 4.3:kernel-macros SUSE Manager Proxy LTS 4.3:kernel-source SUSE Manager Retail Branch Server LTS 4.3:kernel-default SUSE Manager Retail Branch Server LTS 4.3:kernel-default-devel SUSE Manager Retail Branch Server LTS 4.3:kernel-devel SUSE Manager Retail Branch Server LTS 4.3:kernel-macros SUSE Manager Retail Branch Server LTS 4.3:kernel-source SUSE Manager Server LTS 4.3:kernel-default SUSE Manager Server LTS 4.3:kernel-default-devel SUSE Manager Server LTS 4.3:kernel-devel SUSE Manager Server LTS 4.3:kernel-macros SUSE Manager Server LTS 4.3:kernel-source SUSE Real Time Module 15 SP6:kernel-devel-rt SUSE Real Time Module 15 SP6:kernel-source-rt SUSE Real Time Module 15 SP7:kernel-devel-rt SUSE Real Time Module 15 SP7:kernel-source-rt openSUSE Leap 15.6:cluster-md-kmp-default openSUSE Leap 15.6:dlm-kmp-default openSUSE Leap 15.6:gfs2-kmp-default openSUSE Leap 15.6:kernel-default openSUSE Leap 15.6:kernel-default-devel openSUSE Leap 15.6:kernel-default-extra openSUSE Leap 15.6:kernel-default-livepatch openSUSE Leap 15.6:kernel-default-livepatch-devel openSUSE Leap 15.6:kernel-default-optional openSUSE Leap 15.6:kernel-default-vdso openSUSE Leap 15.6:kernel-devel openSUSE Leap 15.6:kernel-devel-azure openSUSE Leap 15.6:kernel-devel-rt openSUSE Leap 15.6:kernel-macros openSUSE Leap 15.6:kernel-source openSUSE Leap 15.6:kernel-source-azure openSUSE Leap 15.6:kernel-source-rt openSUSE Leap 15.6:kernel-source-vanilla openSUSE Leap 15.6:kselftests-kmp-default openSUSE Leap 15.6:ocfs2-kmp-default openSUSE Leap 15.6:reiserfs-kmp-default moderate 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H