FKIE_CVE-2023-53216

Vulnerability from fkie_nvd - Published: 2025-09-15 15:15 - Updated: 2025-12-03 15:55
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: arm64: efi: Make efi_rt_lock a raw_spinlock Running a rt-kernel base on 6.2.0-rc3-rt1 on an Ampere Altra outputs the following: BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 9, name: kworker/u320:0 preempt_count: 2, expected: 0 RCU nest depth: 0, expected: 0 3 locks held by kworker/u320:0/9: #0: ffff3fff8c27d128 ((wq_completion)efi_rts_wq){+.+.}-{0:0}, at: process_one_work (./include/linux/atomic/atomic-long.h:41) #1: ffff80000861bdd0 ((work_completion)(&efi_rts_work.work)){+.+.}-{0:0}, at: process_one_work (./include/linux/atomic/atomic-long.h:41) #2: ffffdf7e1ed3e460 (efi_rt_lock){+.+.}-{3:3}, at: efi_call_rts (drivers/firmware/efi/runtime-wrappers.c:101) Preemption disabled at: efi_virtmap_load (./arch/arm64/include/asm/mmu_context.h:248) CPU: 0 PID: 9 Comm: kworker/u320:0 Tainted: G W 6.2.0-rc3-rt1 Hardware name: WIWYNN Mt.Jade Server System B81.03001.0005/Mt.Jade Motherboard, BIOS 1.08.20220218 (SCP: 1.08.20220218) 2022/02/18 Workqueue: efi_rts_wq efi_call_rts Call trace: dump_backtrace (arch/arm64/kernel/stacktrace.c:158) show_stack (arch/arm64/kernel/stacktrace.c:165) dump_stack_lvl (lib/dump_stack.c:107 (discriminator 4)) dump_stack (lib/dump_stack.c:114) __might_resched (kernel/sched/core.c:10134) rt_spin_lock (kernel/locking/rtmutex.c:1769 (discriminator 4)) efi_call_rts (drivers/firmware/efi/runtime-wrappers.c:101) [...] This seems to come from commit ff7a167961d1 ("arm64: efi: Execute runtime services from a dedicated stack") which adds a spinlock. This spinlock is taken through: efi_call_rts() \-efi_call_virt() \-efi_call_virt_pointer() \-arch_efi_call_virt_setup() Make 'efi_rt_lock' a raw_spinlock to avoid being preempted. [ardb: The EFI runtime services are called with a different set of translation tables, and are permitted to use the SIMD registers. The context switch code preserves/restores neither, and so EFI calls must be made with preemption disabled, rather than only disabling migration.]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/030b1c4217a4f504c7d0795a2bd86b7181e56f11Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0e68b5517d3767562889f1d83fdb828c26adb24fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4e8f7d998b582a99aadedd07ae6086e99b89c97aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6a72729ed6accc86dad5522895e8fa2f96642a2cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8b38969fa01662ec539a0d08a8ea5ec6f31fa4edPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: efi: Make efi_rt_lock a raw_spinlock\n\nRunning a rt-kernel base on 6.2.0-rc3-rt1 on an Ampere Altra outputs\nthe following:\n  BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46\n  in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 9, name: kworker/u320:0\n  preempt_count: 2, expected: 0\n  RCU nest depth: 0, expected: 0\n  3 locks held by kworker/u320:0/9:\n  #0: ffff3fff8c27d128 ((wq_completion)efi_rts_wq){+.+.}-{0:0}, at: process_one_work (./include/linux/atomic/atomic-long.h:41)\n  #1: ffff80000861bdd0 ((work_completion)(\u0026efi_rts_work.work)){+.+.}-{0:0}, at: process_one_work (./include/linux/atomic/atomic-long.h:41)\n  #2: ffffdf7e1ed3e460 (efi_rt_lock){+.+.}-{3:3}, at: efi_call_rts (drivers/firmware/efi/runtime-wrappers.c:101)\n  Preemption disabled at:\n  efi_virtmap_load (./arch/arm64/include/asm/mmu_context.h:248)\n  CPU: 0 PID: 9 Comm: kworker/u320:0 Tainted: G        W          6.2.0-rc3-rt1\n  Hardware name: WIWYNN Mt.Jade Server System B81.03001.0005/Mt.Jade Motherboard, BIOS 1.08.20220218 (SCP: 1.08.20220218) 2022/02/18\n  Workqueue: efi_rts_wq efi_call_rts\n  Call trace:\n  dump_backtrace (arch/arm64/kernel/stacktrace.c:158)\n  show_stack (arch/arm64/kernel/stacktrace.c:165)\n  dump_stack_lvl (lib/dump_stack.c:107 (discriminator 4))\n  dump_stack (lib/dump_stack.c:114)\n  __might_resched (kernel/sched/core.c:10134)\n  rt_spin_lock (kernel/locking/rtmutex.c:1769 (discriminator 4))\n  efi_call_rts (drivers/firmware/efi/runtime-wrappers.c:101)\n  [...]\n\nThis seems to come from commit ff7a167961d1 (\"arm64: efi: Execute\nruntime services from a dedicated stack\") which adds a spinlock. This\nspinlock is taken through:\nefi_call_rts()\n\\-efi_call_virt()\n  \\-efi_call_virt_pointer()\n    \\-arch_efi_call_virt_setup()\n\nMake \u0027efi_rt_lock\u0027 a raw_spinlock to avoid being preempted.\n\n[ardb: The EFI runtime services are called with a different set of\n       translation tables, and are permitted to use the SIMD registers.\n       The context switch code preserves/restores neither, and so EFI\n       calls must be made with preemption disabled, rather than only\n       disabling migration.]"
    }
  ],
  "id": "CVE-2023-53216",
  "lastModified": "2025-12-03T15:55:34.663",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2025-09-15T15:15:48.273",
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  "vulnStatus": "Analyzed",
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      "source": "nvd@nist.gov",
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  ]
}


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