CVE-2026-80867

Description

In the Linux kernel, the following vulnerability has been resolved: alpha/PCI: Add security_locked_down() check to pci_mmap_resource() Currently, Alpha's pci_mmap_resource() does not check security_locked_down(LOCKDOWN_PCI_ACCESS) before allowing userspace to mmap PCI BARs. The generic version has had this check since commit eb627e17727e ("PCI: Lock down BAR access when the kernel is locked down") to prevent DMA attacks when the kernel is locked down. Add the same check to Alpha's pci_mmap_resource().

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EPSS — Exploit Prediction

0.0016

Probability of exploitation

0.06%

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/257b55dc3d18d7ef01f62a8ff7317871f7597e28 https://git.kernel.org/stable/c/4de5ff924c0a8ef8166c1a68af9087826e1e8d61 https://git.kernel.org/stable/c/6e368485a1ac19fbde0a8b6a332d4545ae72a8ac https://git.kernel.org/stable/c/78a228f0aa0e9eba31955950c8a40a9945e2c8bb https://git.kernel.org/stable/c/85f966b1120874fe530edec50d28373ceb06ebcd https://git.kernel.org/stable/c/94defb18ac792fd16407d5a52ad0d3f5055c4b43 https://git.kernel.org/stable/c/c3234efe21d4198945492cf7dba6859476f0f6ff https://git.kernel.org/stable/c/ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2b

Frequently Asked Questions

What is CVE-2026-80867? +

In the Linux kernel, the following vulnerability has been resolved: alpha/PCI: Add security_locked_down() check to pci_mmap_resource() Currently, Alpha's pci_mmap_resource() does not check security_locked_down(LOCKDOWN_PCI_ACCESS) before allowing userspace to mmap PCI BARs. The generic version has had this check since commit eb627e17727e ("PCI: Lock down BAR access when the kernel is locked down") to prevent DMA attacks when the kernel is locked down. Add the same check to Alpha's pci_mmap_resource().

How do I check if I'm vulnerable to CVE-2026-80867? +

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.