Skip to content
CVE PROGRAM SOURCE RECORDUnscored

CVE-2021-46994

can: mcp251x: fix resume from sleep before interface was brought up

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()]

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 8ce8c0abcba314e1fe954a1840f6568bf5aef2ef to < eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21affected
  • 8ce8c0abcba314e1fe954a1840f6568bf5aef2ef to < 6f8f1c27b577de15f69fefce3c502bb6300d825caffected
  • 8ce8c0abcba314e1fe954a1840f6568bf5aef2ef to < e1e10a390fd9479209c4d834d916ca5e6d5d396baffected
  • 8ce8c0abcba314e1fe954a1840f6568bf5aef2ef to < 03c427147b2d3e503af258711af4fc792b89b0afaffected

Linux Linux

Default version status: affected

  • 5.5affected
  • 0 to < 5.5unaffected
  • 5.10.38 to ≤ 5.10.*unaffected
  • 5.11.22 to ≤ 5.11.*unaffected
  • 5.12.5 to ≤ 5.12.*unaffected
  • 5.13 to ≤ *unaffected

References