CVE-2024-42274

MEDIUM EPSS 6.6%
Published Aug 17, 20241y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Aug 17, 2024 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: Revert "ALSA: firewire-lib: operate for period elapse event in process context" Commit 7ba5ca32fe6e ("ALSA: firewire-lib: operate for period elapse event in process context") 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 snd_pcm_stream_lock_irq() in snd_pcm_status64() * (lock B) wait for tasklet to finish by calling tasklet_unlock_spin_wait() in tasklet_disable_in_atomic() in ohci_flush_iso_completions() of ohci.c thread 1: * (lock B) enter tasklet * (lock A) attempt to acquire substream lock, waiting for it to be released: snd_pcm_stream_lock_irqsave() in snd_pcm_period_elapsed() in update_pcm_pointers() in process_ctx_payloads() in process_rx_packets() of amdtp-stream.c ? tasklet_unlock_spin_wait </NMI> <TASK> 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 </NMI> <IRQ> _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 ("ALSA: firewire-lib: operate for period elapse event in process context") Replace inline description to prevent future deadlock.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
6.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-667

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥5.14  –  <5.15.165
linuxlinux_kernel*≥5.16  –  <6.1.104
linuxlinux_kernel*≥6.2  –  <6.6.45
linuxlinux_kernel*≥6.7  –  <6.10.4
linuxlinux_kernel6.11any

References 6

  • git.kernel.org https://git.kernel.org/stable/c/36c255db5a25edd42d1aca48e38b8e95ee5fd9ef
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3dab73ab925a51ab05543b491bf17463a48ca323
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7c07220cf634002f93a87ca2252a32766850f2d1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b239a37d68e8bc59f9516444da222841e3b13ba9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f5043e69aeb2786f32e84132817a007a6430aa7d
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/36c255db5a25edd42d1aca48e38b8e95ee5fd9ef
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3dab73ab925a51ab05543b491bf17463a48ca323
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7c07220cf634002f93a87ca2252a32766850f2d1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b239a37d68e8bc59f9516444da222841e3b13ba9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f5043e69aeb2786f32e84132817a007a6430aa7d
    Patch