CVE-2026-80867 is a vulnerability in Linux Kernel
Published on September 4, 2026
alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
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().
Products Associated with CVE-2026-80867
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Affected Versions
Linux:- Version eb627e17727ebeede70697ae1798688b0d328b54 and below 6e368485a1ac19fbde0a8b6a332d4545ae72a8ac is affected.
- Version eb627e17727ebeede70697ae1798688b0d328b54 and below ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2b is affected.
- Version eb627e17727ebeede70697ae1798688b0d328b54 and below c3234efe21d4198945492cf7dba6859476f0f6ff is affected.
- Version eb627e17727ebeede70697ae1798688b0d328b54 and below 4de5ff924c0a8ef8166c1a68af9087826e1e8d61 is affected.
- Version eb627e17727ebeede70697ae1798688b0d328b54 and below 85f966b1120874fe530edec50d28373ceb06ebcd is affected.
- Version eb627e17727ebeede70697ae1798688b0d328b54 and below 94defb18ac792fd16407d5a52ad0d3f5055c4b43 is affected.
- Version eb627e17727ebeede70697ae1798688b0d328b54 and below 257b55dc3d18d7ef01f62a8ff7317871f7597e28 is affected.
- Version eb627e17727ebeede70697ae1798688b0d328b54 and below 78a228f0aa0e9eba31955950c8a40a9945e2c8bb is affected.
- Version 5.4 is affected.
- Before 5.4 is unaffected.
- Version 5.10.261, <= 5.10.* is unaffected.
- Version 5.15.212, <= 5.15.* is unaffected.
- Version 6.1.178, <= 6.1.* is unaffected.
- Version 6.6.145, <= 6.6.* is unaffected.
- Version 6.12.97, <= 6.12.* is unaffected.
- Version 6.18.40, <= 6.18.* is unaffected.
- Version 7.1.5, <= 7.1.* is unaffected.
- Version 7.2, <= * is unaffected.