Yüksek CVSS 7.8

CVE-2026-46090: Linux Kernel: serbest bırakılmış belleğin kullanımı

Yayın: 27 Mayıs 2026 17:17 · Güncelleme: 6 Kasım 2026 10:19

Açıklama (NVD)

In the Linux kernel, the following vulnerability has been resolved: ALSA: aloop: Fix peer runtime UAF during format-change stop loopback_check_format() may stop the capture side when playback starts with parameters that no longer match a running capture stream. Commit 826af7fa62e3 ("ALSA: aloop: Fix racy access at PCM trigger") moved the peer lookup under cable->lock, but the actual snd_pcm_stop() still runs after dropping that lock. A concurrent close can clear the capture entry from cable->streams[] and detach or free its runtime while the playback trigger path still holds a stale peer substream pointer. Keep a per-cable count of in-flight peer stops before dropping cable->lock, and make free_cable() wait for those stops before detaching the runtime. This preserves the existing behavior while making the peer runtime lifetime explicit.

Özet bilgiler

Ürün: Linux Linux Kernel
CVSS v3.1: 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: %0,10 (yüzdelik 1)
CWE: CWE-416
Yama: Mevcut

Etkilenen sürümler

Ürün	Başlangıç	Bitiş	Düzeltildi
linux-linux-kernel	2.6.37	—	5.10.259
linux-linux-kernel	5.11	—	5.15.210
linux-linux-kernel	5.16	—	6.12.88
linux-linux-kernel	6.13	—	6.18.27
linux-linux-kernel	6.19	—	7.0.4
linux-linux-kernel	7.1	7.1	—

Kaynaklar

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