In the Linux kernel, the following vulnerability has been resolved:

PCI: altera: Fix resource leaks on probe failure

The chained IRQ handler is set during probe, but is only removed during the
driver remove(). If pci_host_probe() fails, the handler and INTx IRQ
domain remain set even though the devm-managed host bridge storage
containing struct altera_pcie will be released, leaving the handler with
a stale data pointer.

Interrupts are also enabled before pci_host_probe() is called. If probe
fails after that point, the controller interrupt source should be disabled
before the chained handler and INTx domain are removed.

So set the chained handler only after the INTx domain has been created.
Disable controller interrupts during IRQ teardown, and tear the IRQ setup
down if pci_host_probe() fails.

[mani: commit log]

https://git.kernel.org/stable/c/09c43b7b7d29c6fadb27f32cdf7f3bb6598befa9

https://git.kernel.org/stable/c/0db9aa9ec51be0a0ffdcdfd9af2b7bf3aeb7911a

https://git.kernel.org/stable/c/6864c789b570e57f932847fa83f6b56917182d73

https://git.kernel.org/stable/c/7a94138caeb27f3c49c1dbd93bf422098925bb28

https://git.kernel.org/stable/c/99fc088d6cc6890ae35fa2f29c50ebe027844c20

https://git.kernel.org/stable/c/9cf0cc481e1645ec65e61486ae41c486c59781cb

https://git.kernel.org/stable/c/a25bfa2a6665a1d77324d4a609e7513b87680227

https://git.kernel.org/stable/c/af7cf5d56d7d57c4fbfdb7b5b693790f331b07b7

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