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CVE-2026-43276 is a Linux kernel vulnerability in the net/mana driver caused by incorrect cleanup handling on the service rescan PCI path. During error handling, mana_serv_reset() can call mana_gd_suspend(), which leads mana_gd_cleanup() to destroy the driver's service workqueue. If a subsequent mana_gd_resume() operation fails with timeout or protocol errors, execution falls through to the service rescan path, which removes the PCI device and invokes the driver's PCI remove callback. That callback calls mana_gd_cleanup() again, resulting in a second destroy operation against an already freed workqueue object. This creates a use-after-free condition in kernel space. The fix adds a NULL check before destroying the workqueue and clears the pointer after destruction to prevent repeated cleanup of the same object.
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A Linux kernel net/mana vulnerability involving a double destroy_workqueue condition on the service rescan PCI path.
A Linux kernel vulnerability in the net: mana driver where cleanup on the service rescan PCI path could destroy an already freed workqueue, leading to a use-after-free/double-destroy condition and crash.
A Linux kernel vulnerability in the net/mana component involving a double destroy_workqueue condition on the service rescan PCI path.
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