{ "cveId": "CVE-2023-54288", "url": "https://patchblox.com/security/cve/CVE-2023-54288", "summary": "CVE-2023-54288 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-54288, released December 30, 2025. It is not reported as exploited. Patch Radar priority: Routine.", "title": "linux: In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fortify the spinlock against dea...", "description": "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: \tspin_lock(\u0026local-\u003Equeue_stop_reason_lock); \tq_stopped = local-\u003Equeue_stop_reasons[q]; \tspin_unlock(\u0026local-\u003Equeue_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 \u0026local-\u003Equeue_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(\u0026local-\u003Equeue_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} -\u003E {SOFTIRQ-ON-W} usage. kernel: kworker/5:0/25656 [HC0[0]:SC0[0]:HE1:SE1] takes: kernel: ffff9d6190779478 (\u0026local-\u003Equeue_stop_reason_lock){\u002B.?.}-{2:2}, at: return_to_handler\u002B0x0/0x40 kernel: {IN-SOFTIRQ-W} state was registered at: kernel: lock_acquire\u002B0xc7/0x2d0 kernel: _raw_spin_lock\u002B0x36/0x50 kernel: ieee80211_tx_dequeue\u002B0xb4/0x1330 [mac80211] kernel: iwl_mvm_mac_itxq_xmit\u002B0xae/0x210 [iwlmvm] kernel: iwl_mvm_mac_wake_tx_queue\u002B0x2d/0xd0 [iwlmvm] kernel: ieee80211_queue_skb\u002B0x450/0x730 [mac80211] kernel: __ieee80211_xmit_fast.constprop.66\u002B0x834/0xa50 [mac80211] kernel: __ieee80211_subif_start_xmit\u002B0x217/0x530 [mac80211] kernel: ieee80211_subif_start_xmit\u002B0x60/0x580 [mac80211] kernel: dev_hard_start_xmit\u002B0xb5/0x260 kernel: __dev_queue_xmit\u002B0xdbe/0x1200 kernel: neigh_resolve_output\u002B0x166/0x260 kernel: ip_finish_output2\u002B0x216/0xb80 kernel: __ip_finish_output\u002B0x2a4/0x4d0 kernel: ip_finish_output\u002B0x2d/0xd0 kernel: ip_output\u002B0x82/0x2b0 kernel: ip_local_out\u002B0xec/0x110 kernel: igmpv3_sendpack\u002B0x5c/0x90 kernel: igmp_ifc_timer_expire\u002B0x26e/0x4e0 kernel: call_timer_fn\u002B0xa5/0x230 kernel: run_timer_softirq\u002B0x27f/0x550 kernel: __do_softirq\u002B0xb4/0x3a4 kernel: irq_exit_rcu\u002B0x9b/0xc0 kernel: sysvec_apic_timer_interrupt\u002B0x80/0xa0 kernel: asm_sysvec_apic_timer_interrupt\u002B0x1f/0x30 kernel: _raw_spin_unlock_irqrestore\u002B0x3f/0x70 kernel: free_to_partial_list\u002B0x3d6/0x590 kernel: __slab_free\u002B0x1b7/0x310 kernel: kmem_cache_free\u002B0x52d/0x550 kernel: putname\u002B0x5d/0x70 kernel: do_sys_openat2\u002B0x1d7/0x310 kernel: do_sys_open\u002B0x51/0x80 kernel: __x64_sys_openat\u002B0x24/0x30 kernel: do_syscall_64\u002B0x5c/0x90 kernel: entry_SYSCALL_64_after_hwframe\u002B0x72/0xdc kernel: irq event stamp: 5120729 kernel: hardirqs last enabled at (5120729): [\u003Cffffffff9d149936\u003E] trace_graph_return\u002B0xd6/0x120 kernel: hardirqs last disabled at (5120728): [\u003Cffffffff9d149950\u003E] trace_graph_return\u002B0xf0/0x120 kernel: softirqs last enabled at (5069900): [\u003Cffffffff9cf65b60\u003E] return_to_handler\u002B0x0/0x40 kernel: softirqs last disabled at (5067555): [\u003Cffffffff9cf65b60\u003E] return_to_handler\u002B0x0/0x40 kernel: other info that might help us debug this: kernel: Possible unsafe locking scenario: kernel: CPU0 kernel: ---- kernel: lock(\u0026local-\u003Equeue_stop_reason_lock); kernel: \u003CInterrupt\u003E kernel: lock(\u0026local-\u003Equeue_stop_reason_lock); kernel: *** DEADLOCK *** kernel: 8 locks held by kworker/5:0/25656: kernel: #0: ffff9d618009d138 ((wq_completion)events_freezable){\u002B.\u002B.}-{0:0}, at: process_one_work\u002B0x1ca/0x530 kernel: #1: ffffb1ef4637fe68 ((work_completion)(\u0026local-\u003Erestart_work)){\u002B.\u002B.}-{0:0}, at: process_one_work\u002B0x1ce/0x530 kernel: #2: ffffffff9f166548 (rtnl_mutex){\u002B.\u002B.}-{3:3}, at: return_to_handler\u002B0x0/0x40 kernel: #3: ffff9d619 ---truncated---", "published": "2025-12-30T13:16:17Z", "severity": "", "epss": 0.00197, "epssPercentile": 0.09466, "priority": "Routine", "priorityTier": 4, "exploited": false, "vendorExploited": false, "disclosed": false, "fixes": [ { "platform": "linux", "product": "linux", "release": "Debian 12.15 (bookworm)", "fixedVersion": "6.1.37-1", "fix": "DEBIAN-CVE-2023-54288", "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-54288", "released": "2025-12-30T13:16:17Z" }, { "platform": "linux", "product": "linux", "release": "Debian 13.5 (trixie)", "fixedVersion": "6.3.7-1", "fix": "DEBIAN-CVE-2023-54288", "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-54288", "released": "2025-12-30T13:16:17Z" }, { "platform": "linux", "product": "linux", "release": "Debian 14", "fixedVersion": "6.3.7-1", "fix": "DEBIAN-CVE-2023-54288", "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-54288", "released": "2025-12-30T13:16:17Z" } ], "noFixYet": [], "dataAsOf": "2026-11-08T19:12:23Z", "attribution": { "text": "Data: Patchblox Patch Radar", "url": "https://patchblox.com/security/patch-radar", "terms": "https://patchblox.com/security/patch-radar/use-the-data" } }