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CVE-2023-53760— scsi: ufs: core: mcq: Fix &hwq->cq_lock deadlock issue

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于hwq->cq_lock死锁问题，可能导致系统挂起。

AI Predicted 4.7 Difficulty: Moderate EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux ed975065c31c2a0372e13c19e8140b69814a98ba< 2ce8c49c7b53e0a2258b833eeab16a6d78f732d1 affected
ed975065c31c2a0372e13c19e8140b69814a98ba< 948afc69615167a3c82430f99bfd046332b89912 affected
6.3 affected
< 6.3 unaffected
6.3.3≤ 6.3.* unaffected
6.4≤ * unaffected
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I. Basic Information for CVE-2023-53760

Vulnerability Information
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Vulnerability Title
scsi: ufs: core: mcq: Fix &hwq->cq_lock deadlock issue
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: mcq: Fix &hwq->cq_lock deadlock issue When ufshcd_err_handler() is executed, CQ event interrupt can enter waiting for the same lock. This can happen in ufshcd_handle_mcq_cq_events() and also in ufs_mtk_mcq_intr(). The following warning message will be generated when &hwq->cq_lock is used in IRQ context with IRQ enabled. Use ufshcd_mcq_poll_cqe_lock() with spin_lock_irqsave instead of spin_lock to resolve the deadlock issue. [name:lockdep&]WARNING: inconsistent lock state [name:lockdep&]-------------------------------- [name:lockdep&]inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage. [name:lockdep&]kworker/u16:4/260 [HC0[0]:SC0[0]:HE1:SE1] takes: ffffff8028444600 (&hwq->cq_lock){?.-.}-{2:2}, at: ufshcd_mcq_poll_cqe_lock+0x30/0xe0 [name:lockdep&]{IN-HARDIRQ-W} state was registered at: lock_acquire+0x17c/0x33c _raw_spin_lock+0x5c/0x7c ufshcd_mcq_poll_cqe_lock+0x30/0xe0 ufs_mtk_mcq_intr+0x60/0x1bc [ufs_mediatek_mod] __handle_irq_event_percpu+0x140/0x3ec handle_irq_event+0x50/0xd8 handle_fasteoi_irq+0x148/0x2b0 generic_handle_domain_irq+0x4c/0x6c gic_handle_irq+0x58/0x134 call_on_irq_stack+0x40/0x74 do_interrupt_handler+0x84/0xe4 el1_interrupt+0x3c/0x78 <snip> Possible unsafe locking scenario: CPU0 ---- lock(&hwq->cq_lock); <Interrupt> lock(&hwq->cq_lock); *** DEADLOCK *** 2 locks held by kworker/u16:4/260: [name:lockdep&] stack backtrace: CPU: 7 PID: 260 Comm: kworker/u16:4 Tainted: G S W OE 6.1.17-mainline-android14-2-g277223301adb #1 Workqueue: ufs_eh_wq_0 ufshcd_err_handler Call trace: dump_backtrace+0x10c/0x160 show_stack+0x20/0x30 dump_stack_lvl+0x98/0xd8 dump_stack+0x20/0x60 print_usage_bug+0x584/0x76c mark_lock_irq+0x488/0x510 mark_lock+0x1ec/0x25c __lock_acquire+0x4d8/0xffc lock_acquire+0x17c/0x33c _raw_spin_lock+0x5c/0x7c ufshcd_mcq_poll_cqe_lock+0x30/0xe0 ufshcd_poll+0x68/0x1b0 ufshcd_transfer_req_compl+0x9c/0xc8 ufshcd_err_handler+0x3bc/0xea0 process_one_work+0x2f4/0x7e8 worker_thread+0x234/0x450 kthread+0x110/0x134 ret_from_fork+0x10/0x20
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于hwq->cq_lock死锁问题，可能导致系统挂起。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux ed975065c31c2a0372e13c19e8140b69814a98ba ~ 2ce8c49c7b53e0a2258b833eeab16a6d78f732d1 -
Linux Linux 6.3 -

II. Public POCs for CVE-2023-53760

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III. Intelligence Information for CVE-2023-53760

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Same Patch Batch · Linux · 2025-12-08 · 82 CVEs total

CVE-2023-53751 9.8 CRITICAL cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname
CVE-2025-40320 9.8 CRITICAL smb: client: fix potential cfid UAF in smb2_query_info_compound
CVE-2023-53769 9.3 CRITICAL virt/coco/sev-guest: Double-buffer messages
CVE-2025-40318 8.8 HIGH Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once
CVE-2023-53764 8.8 HIGH wifi: ath12k: Handle lock during peer_id find
CVE-2023-53762 8.8 HIGH Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync
CVE-2025-40292 8.4 HIGH virtio-net: fix received length check in big packets
CVE-2025-40309 8.0 HIGH Bluetooth: SCO: Fix UAF on sco_conn_free
CVE-2025-40323 7.8 HIGH fbcon: Set fb_display[i]->mode to NULL when the mode is released
CVE-2023-53747 7.8 HIGH vc_screen: reload load of struct vc_data pointer in vcs_write() to avoid UAF
CVE-2023-53753 7.8 HIGH drm/amd/display: fix mapping to non-allocated address
CVE-2025-40319 7.8 HIGH bpf: Sync pending IRQ work before freeing ring buffer
CVE-2023-53763 7.8 HIGH Revert "f2fs: fix to do sanity check on extent cache correctly"
CVE-2025-40317 7.8 HIGH regmap: slimbus: fix bus_context pointer in regmap init calls
CVE-2023-53759 7.8 HIGH HID: hidraw: fix data race on device refcount
CVE-2022-50623 7.8 HIGH fpga: prevent integer overflow in dfl_feature_ioctl_set_irq()
CVE-2023-53752 7.8 HIGH net: deal with integer overflows in kmalloc_reserve()
CVE-2022-50630 7.8 HIGH mm: hugetlb: fix UAF in hugetlb_handle_userfault
CVE-2025-40297 7.8 HIGH net: bridge: fix use-after-free due to MST port state bypass
CVE-2023-53768 7.8 HIGH regmap-irq: Fix out-of-bounds access when allocating config buffers

Showing top 20 of 82 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53760

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