CVE-2023-5563
First published: Thu Oct 12 2023(Updated: )
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.
Credit: vulnerabilities@zephyrproject.org vulnerabilities@zephyrproject.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zephyrproject Zephyr | <=3.4.0 | |
| <=3.4.0 |
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Frequently Asked Questions
What is CVE-2023-5563?
CVE-2023-5563 is a vulnerability in the SJA1000 CAN controller driver backend that causes a fatal exception when attempting to recover from a bus-off event in IRQ context.
How does the SJA1000 CAN controller driver backend recover from a bus-off event?
The SJA1000 CAN controller driver backend attempts to recover from a bus-off event automatically when built with CONFIG_CAN_AUTO_BUS_OFF_RECOVERY=y.
What is the severity of CVE-2023-5563?
CVE-2023-5563 has a severity rating of 7.1 (high).
Which software versions are affected by CVE-2023-5563?
CVE-2023-5563 affects Zephyrproject Zephyr versions up to and including 3.4.0.
How can I fix CVE-2023-5563?
To fix CVE-2023-5563, update Zephyrproject Zephyr to a version later than 3.4.0.
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