{
  "cveId": "CVE-2024-42274",
  "url": "https://patchblox.com/security/cve/CVE-2024-42274",
  "summary": "CVE-2024-42274 is fixed in 22 products on 1 platform, first by DEBIAN-CVE-2024-42274, released August 17, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  Revert \u0022ALSA: firewire-lib: operate for period e...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  Revert \u0022ALSA: firewire-lib: operate for period elapse event in process context\u0022  Commit 7ba5ca32fe6e (\u0022ALSA: firewire-lib: operate for period elapse event in process context\u0022) removed the process context workqueue from amdtp_domain_stream_pcm_pointer() and update_pcm_pointers() to remove its overhead.  With RME Fireface 800, this lead to a regression since Kernels 5.14.0, causing an AB/BA deadlock competition for the substream lock with eventual system freeze under ALSA operation:  thread 0:     * (lock A) acquire substream lock by \tsnd_pcm_stream_lock_irq() in \tsnd_pcm_status64()     * (lock B) wait for tasklet to finish by calling     \ttasklet_unlock_spin_wait() in \ttasklet_disable_in_atomic() in \tohci_flush_iso_completions() of ohci.c  thread 1:     * (lock B) enter tasklet     * (lock A) attempt to acquire substream lock,     \twaiting for it to be released: \tsnd_pcm_stream_lock_irqsave() in     \tsnd_pcm_period_elapsed() in \tupdate_pcm_pointers() in \tprocess_ctx_payloads() in \tprocess_rx_packets() of amdtp-stream.c  ? tasklet_unlock_spin_wait  \u003C/NMI\u003E  \u003CTASK\u003E ohci_flush_iso_completions firewire_ohci amdtp_domain_stream_pcm_pointer snd_firewire_lib snd_pcm_update_hw_ptr0 snd_pcm snd_pcm_status64 snd_pcm  ? native_queued_spin_lock_slowpath  \u003C/NMI\u003E  \u003CIRQ\u003E _raw_spin_lock_irqsave snd_pcm_period_elapsed snd_pcm process_rx_packets snd_firewire_lib irq_target_callback snd_firewire_lib handle_it_packet firewire_ohci context_tasklet firewire_ohci  Restore the process context work queue to prevent deadlock AB/BA deadlock competition for ALSA substream lock of snd_pcm_stream_lock_irq() in snd_pcm_status64() and snd_pcm_stream_lock_irqsave() in snd_pcm_period_elapsed().  revert commit 7ba5ca32fe6e (\u0022ALSA: firewire-lib: operate for period elapse event in process context\u0022)  Replace inline description to prevent future deadlock.",
  "published": "2024-08-17T09:15:08Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00169,
  "epssPercentile": 0.06301,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
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}