What is CVE-2023-1902?

CVE-2023-1902 is a medium-severity vulnerability in Zephyrproject Zephyr, classified under Use After Free. CVSS score: 5.9/10. Published 2023-07-10.

How severe is CVE-2023-1902?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Is CVE-2023-1902 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Zephyrproject Zephyr

CVE-2023-1902

The bluetooth HCI host layer logic not clearing a global reference to a state pointer after handling connection events may allow a malicious HCI Controller to cause the use of a dangling reference in the host layer, leading to a crash (DoS) or potential RCE on the Host layer.

Vulnerability class: Use-After-Free

EPSS: 0.006 (45.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

vulnerabilities@zephyrproject.org (Vendor Advisory)

Frequently asked questions

What is CVE-2023-1902?: CVE-2023-1902 is a medium-severity vulnerability in Zephyrproject Zephyr, classified under Use After Free. CVSS score: 5.9/10. Published 2023-07-10.
How severe is CVE-2023-1902?: Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2023-1902 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.