Heimdall Security Logo

CVE-2024-42274

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.2%
Linux•Linux•Versions : <=6.1.*, 5.15.165, <b239a37d68e8bc59f9516444da222841e3b13ba9, 0, <5.14, <=6.6.*, 5.14, 7ba5ca32fe6e8d2e153fb5602997336517b34743, 6.1.104, <7c07220cf634002f93a87ca2252a32766850f2d1, <36c255db5a25edd42d1aca48e38b8e95ee5fd9ef, <f5043e69aeb2786f32e84132817a007a6430aa7d, 6.10.4, 6.11, 6.6.45, <=*, <=5.15.*, <=6.10.*, <3dab73ab925a51ab05543b491bf17463a48ca323

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.

Gravité et risque d'exploitation

CVE-2024-42274 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.17 %, ce qui la place devant 5.9 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <=6.1.*, 5.15.165, <b239a37d68e8bc59f9516444da222841e3b13ba9, 0, <5.14, <=6.6.*, 5.14, 7ba5ca32fe6e8d2e153fb5602997336517b34743, 6.1.104, <7c07220cf634002f93a87ca2252a32766850f2d1, <36c255db5a25edd42d1aca48e38b8e95ee5fd9ef, <f5043e69aeb2786f32e84132817a007a6430aa7d, 6.10.4, 6.11, 6.6.45, <=*, <=5.15.*, <=6.10.*, <3dab73ab925a51ab05543b491bf17463a48ca323) est présent sur votre parc.
  • Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
  • À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
  • Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.

Références

Rechercher une autre CVE