Overview
Linux kernel contains a use-after-free vulnerability that allows for privilege escalation to gain ring0 access from the system user.
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://nvd.nist.gov/vuln/detail/CVE-2023-0266
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2023-0266 |
| Vendor / Product | Linux — Kernel |
| NVD Published | 2023-01-30 |
| NVD Last Modified | 2025-10-24 |
| CVSS 3.1 Score | 7.9 |
| CVSS 3.1 Vector | CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H |
| Severity | HIGH |
| CWE | CWE-416 |
| CISA KEV Added | 2023-03-30 |
| CISA KEV Deadline | 2023-04-20 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
High
Availability
High
Required Action
CISA BOD 22-01 Deadline: 2023-04-20.
Apply updates per vendor instructions.
Timeline
| Date | Event |
|---|---|
| 2023-03-30 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2023-04-20 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2023-0266 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |