CVE-2026-80867

Summary

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

VendorProductVersion RangeStatus
LinuxLinuxeb627e17727ebeede70697ae1798688b0d328b54 < 6e368485a1ac19fbde0a8b6a332d4545ae72a8acaffected
LinuxLinuxeb627e17727ebeede70697ae1798688b0d328b54 < ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2baffected
LinuxLinuxeb627e17727ebeede70697ae1798688b0d328b54 < c3234efe21d4198945492cf7dba6859476f0f6ffaffected
LinuxLinuxeb627e17727ebeede70697ae1798688b0d328b54 < 4de5ff924c0a8ef8166c1a68af9087826e1e8d61affected
LinuxLinuxeb627e17727ebeede70697ae1798688b0d328b54 < 85f966b1120874fe530edec50d28373ceb06ebcdaffected
LinuxLinuxeb627e17727ebeede70697ae1798688b0d328b54 < 94defb18ac792fd16407d5a52ad0d3f5055c4b43affected
LinuxLinuxeb627e17727ebeede70697ae1798688b0d328b54 < 257b55dc3d18d7ef01f62a8ff7317871f7597e28affected
LinuxLinuxeb627e17727ebeede70697ae1798688b0d328b54 < 78a228f0aa0e9eba31955950c8a40a9945e2c8bbaffected
LinuxLinux5.4affected
LinuxLinux0 < 5.4unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References