net: marvell: prestera: fix NULL dereference on devlink_alloc() failure

In the Linux kernel, the following vulnerability has been resolved: net: marvell: prestera: fix NULL dereference on devlink_alloc() failure devlink_alloc() may return NULL on allocation failure, but prestera_devlink_alloc() unconditionally calls devlink_priv() on the returned pointer. This leads to a NULL pointer dereference if devlink allocation fails. Add a check for a NULL devlink pointer and return NULL early to avoid the crash.

Source published

31 Jan 2026 11:39:03 UTC

Source modified

15 Oct 2026 01:12:39 UTC

Observed here

23 Oct 2026 15:48:27 UTC

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