Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix resume from sleep before interface was brought up Since 8ce8c0abcba3 the driver queues work via priv->restart_work when resuming after suspend, even when the interface was not previously enabled. This causes a null dereference error as the workqueue is only allocated and initialized in mcp251x_open(). To fix this we move the workqueue init to mcp251x_can_probe() as there is no reason to do it later and repeat it whenever mcp251x_open() is called. [mkl: fix error handling in mcp251x_stop()]
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.5, < 5.10.38 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/03c427147b2d3e503af258711af4fc792b89b0afPatch
- https://git.kernel.org/stable/c/6f8f1c27b577de15f69fefce3c502bb6300d825cPatch
- https://git.kernel.org/stable/c/e1e10a390fd9479209c4d834d916ca5e6d5d396bPatch
- https://git.kernel.org/stable/c/eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21Patch
- https://git.kernel.org/stable/c/03c427147b2d3e503af258711af4fc792b89b0afPatch
- https://git.kernel.org/stable/c/6f8f1c27b577de15f69fefce3c502bb6300d825cPatch
- https://git.kernel.org/stable/c/e1e10a390fd9479209c4d834d916ca5e6d5d396bPatch
- https://git.kernel.org/stable/c/eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21Patch
FAQ
What is CVE-2021-46994?
CVE-2021-46994 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix resume from sleep before interface was brought up Since 8ce8c0abcba3 the driver queues work via priv->restart_wo...
How severe is CVE-2021-46994?
CVE-2021-46994 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-46994?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.