Home / Vulnerabilities / CVE-2023-0266
HIGH SEVERITY
CVE-2023-0266 Linux · Kernel

Linux Kernel Use-After-Free Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH
7.9 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H
Exploitation Likelihood

EPSS Prediction

0.09 %
Predictive Probability
Percentile Rank
26.1 th

Documented as more likely to be exploited than 26.1% of known CVEs.

Detection Date

Mar 30, 2023

Remediation Due

Apr 20, 2023

CISA Catalog Active

Threat Analysis

Linux kernel contains a use-after-free vulnerability that allows for privilege escalation to gain ring0 access from the system user.

Remediation Directive

Apply updates per vendor instructions.

External Intelligence

https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa-pcm-move-rwsem-lock-inside-snd_ctl_elem_read-to-prevent-uaf.patch?id=72783cf35e6c55bca84c4bb7b776c58152856fd4

https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa-pcm-move-rwsem-lock-inside-snd_ctl_elem_read-to-prevent-uaf.patch?id=72783cf35e6c55bca84c4bb7b776c58152856fd4
NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2023-0266