medium5.5
CVE-2021-46994
In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix resume from sleep before interface was brought up Since 8ce8c0abcba3 the …
Impact
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()]
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.5 before 5.10.38 from 5.11 before 5.11.22 from 5.12 before 5.12.5 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/03c427147b2d3e503af258711af4fc792b89b0af
- https://git.kernel.org/stable/c/6f8f1c27b577de15f69fefce3c502bb6300d825c
- https://git.kernel.org/stable/c/e1e10a390fd9479209c4d834d916ca5e6d5d396b
- https://git.kernel.org/stable/c/eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21
- https://git.kernel.org/stable/c/03c427147b2d3e503af258711af4fc792b89b0af
- https://git.kernel.org/stable/c/6f8f1c27b577de15f69fefce3c502bb6300d825c
- https://git.kernel.org/stable/c/e1e10a390fd9479209c4d834d916ca5e6d5d396b
- https://git.kernel.org/stable/c/eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21