Vulnerability Intelligence Report
Use after free in SNDRV_CTL_IOCTL_ELEM in Linux Kernel
CVE-2023-0266
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
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
7.9
HIGH
Exploitability:1.3
Impact Score:6.0
EPSS Probability:3.70%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
—
Weaknesses (CWE)
CWE-416 ↗CWE-416 Use After Free
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Linux | Linux Kernel | 4.14 < 56b88b50565cd8b946a2d00b0c83927b7ebb055e (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Google LLC · Vendor · USA |
| Reserved | 2023-01-13T07:58:13 |
| Published | 2023-01-30T13:09:32 |
| Patch Date | 2023-01-13 |
| Last Updated | 2025-10-21T23:15:27 |
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