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CVE-2026-80867

Unknown

Last modified

CVE-2026-80867 is a vulnerability of currently unknown severity. 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()..

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().

Affected Software

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

VendorProductVersions
LinuxLinux>= eb627e17727ebeede70697ae1798688b0d328b54, < 6e368485a1ac19fbde0a8b6a332d4545ae72a8ac; >= eb627e17727ebeede70697ae1798688b0d328b54, < ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2b; >= eb627e17727ebeede70697ae1798688b0d328b54, < c3234efe21d4198945492cf7dba6859476f0f6ff; >= eb627e17727ebeede70697ae1798688b0d328b54, < 4de5ff924c0a8ef8166c1a68af9087826e1e8d61; >= eb627e17727ebeede70697ae1798688b0d328b54, < 85f966b1120874fe530edec50d28373ceb06ebcd; >= eb627e17727ebeede70697ae1798688b0d328b54, < 94defb18ac792fd16407d5a52ad0d3f5055c4b43; >= eb627e17727ebeede70697ae1798688b0d328b54, < 257b55dc3d18d7ef01f62a8ff7317871f7597e28; >= eb627e17727ebeede70697ae1798688b0d328b54, < 78a228f0aa0e9eba31955950c8a40a9945e2c8bb
LinuxLinux5.4

References

Timeline

Published
Last Modified
Status
Received

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 severe is CVE-2026-80867?
Severity scoring for CVE-2026-80867 is pending analysis.
How do I fix CVE-2026-80867?
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