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CVE-2026-64462

Unknown

Last modified

CVE-2026-64462 is a vulnerability of currently unknown severity. 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.

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]

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= c63aed7334c21de8d626ff028ccad98cf5847a0e, < af7cf5d56d7d57c4fbfdb7b5b693790f331b07b7; >= c63aed7334c21de8d626ff028ccad98cf5847a0e, < 9cf0cc481e1645ec65e61486ae41c486c59781cb; >= c63aed7334c21de8d626ff028ccad98cf5847a0e, < 99fc088d6cc6890ae35fa2f29c50ebe027844c20; >= c63aed7334c21de8d626ff028ccad98cf5847a0e, < a25bfa2a6665a1d77324d4a609e7513b87680227; >= c63aed7334c21de8d626ff028ccad98cf5847a0e, < 0db9aa9ec51be0a0ffdcdfd9af2b7bf3aeb7911a; >= c63aed7334c21de8d626ff028ccad98cf5847a0e, < 09c43b7b7d29c6fadb27f32cdf7f3bb6598befa9; >= c63aed7334c21de8d626ff028ccad98cf5847a0e, < 6864c789b570e57f932847fa83f6b56917182d73; >= c63aed7334c21de8d626ff028ccad98cf5847a0e, < 7a94138caeb27f3c49c1dbd93bf422098925bb28
LinuxLinux5.9

References

Timeline

Published
Last Modified
Status
Received

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 severe is CVE-2026-64462?
Severity scoring for CVE-2026-64462 is pending analysis.
How do I fix CVE-2026-64462?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST