high Known exploitedREV. 01
CVE-2023-0266Linux Kernel Sound Subsystem — Use-After-Free Escalation
Missing locks in the sound subsystem of the Linux kernel allow a use-after-free, which a local system user can turn into privilege escalation with ring0 access.
Read the risk
THE VITAL STATS- CVSS score
- 7.0/ 10 CVSS v3.1
- EPSS probability
- 3.7% Likelihood of exploitation
- Attack complexity
- High Conditions needed to exploit
- Known exploited
- Yes — CISA KEV
- CVE published
- 2023-01-30
- Added to KEV
- 2023-03-30
- CISA due date
- 2023-04-20
- Exploit published
- Not recorded
- Confidence
- high
- Kill chain
- privilege escalation
- MITRE ATT&CK
- —
- Severity
- high
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attacker needsLocal access as a system user on an affected Linux host.
Behind the card
5 REFERENCES- 01CVE recordNVD recordnvd.nist.gov
- 02CISACISA Known Exploited Vulnerabilities catalogcisa.gov
- 03Vendor advisorygit.kernel.orggit.kernel.org
- 04Vendor advisorygithub.comgithub.com
- 05Vendor advisorygithub.comgithub.com
Field-level provenanceTRACE THE SOURCES +
Which source supports each field, when it was retrieved, and who extracted it.
| Fields | Source | Retrieved | Extractor | Confidence |
|---|---|---|---|---|
| cvss, exploitation.attack_complexity, exploitation.exploit_available, published_at, references | nvd.nist.gov | 2026-11-05 | scrty-crds-pipeline/0.1 | high |
| exploitation.known_exploited, exploitation.kev_added, exploitation.kev_due | cisa.gov | 2026-11-05 | scrty-crds-pipeline/0.1 | high |
| epss | api.first.org | 2026-11-05 | scrty-crds-pipeline/0.1 | high |
| title, subtitle, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisites | nvd.nist.gov | 2026-11-05 | claude-code | high |
Printing history
THE RECORD- r1Initial base card
History unavailable — this build has no Git history for the card file.