What is CVE-2023-5563?

CVE-2023-5563 is a high-severity vulnerability in Zephyrproject Zephyr, classified under CWE-703. CVSS score: 7.1/10. Published 2023-10-13.

How severe is CVE-2023-5563?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Zephyrproject Zephyr

CVE-2023-5563

The SJA1000 CAN controller driver backend automatically attempt to recover from a bus-off event when built with CONFIG_CAN_AUTO_BUS_OFF_RECOVERY=y. This results in calling k_sleep() in IRQ context, causing a fatal exception.

EPSS: 0.004 (36.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

Affected products

Zephyrproject Zephyr
Zephyrproject-rtos Zephyr — versions 3.3

Weakness classification (CWE)

CWE-703

References

vulnerabilities@zephyrproject.org (Vendor Advisory)

Frequently asked questions

What is CVE-2023-5563?: CVE-2023-5563 is a high-severity vulnerability in Zephyrproject Zephyr, classified under CWE-703. CVSS score: 7.1/10. Published 2023-10-13.
How severe is CVE-2023-5563?: High severity. CVSS v3 base score is 7.1 out of 10.