CVE-2026-64462

Description

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]

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EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.13%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

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

Frequently Asked Questions

What is CVE-2026-64462? +

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]

How do I check if I'm vulnerable to CVE-2026-64462? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.