CVE-2023-0266CISA KEVEPSS p88.3%

CVE-2023-0266CVE-2023-0266

debian / debian_linux

Description

A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e

Scoring

CVSS 7.9 ()
VectorCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H
EPSS3.70% probability of exploitation · percentile 88.3% · 2026-06-19T12:03:05Z
Last modified2026-06-17

CISA KEV entry

Added to KEV: 2023-03-30

(incoming)1

TypeTargetConfidenceTier
KEVEntryLinux Kernel Use-After-Free Vulnerabilitykev-cve-2023-02660%live

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Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.