CVE-2026-80867

alpha/PCI: Add security_locked_down() check to pci_mmap_resource()

State: Published
Severity: Not scored
Published: Sep 4, 2026
Updated: Sep 4, 2026
Reserved: Aug 26, 2026

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().

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	eb627e17727ebeede70697ae1798688b0d328b54 to before 6e368485a1ac19fbde0a8b6a332d4545ae72a8acAffected eb627e17727ebeede70697ae1798688b0d328b54 to before ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2bAffected eb627e17727ebeede70697ae1798688b0d328b54 to before c3234efe21d4198945492cf7dba6859476f0f6ffAffected eb627e17727ebeede70697ae1798688b0d328b54 to before 4de5ff924c0a8ef8166c1a68af9087826e1e8d61Affected eb627e17727ebeede70697ae1798688b0d328b54 to before 85f966b1120874fe530edec50d28373ceb06ebcdAffected eb627e17727ebeede70697ae1798688b0d328b54 to before 94defb18ac792fd16407d5a52ad0d3f5055c4b43Affected eb627e17727ebeede70697ae1798688b0d328b54 to before 257b55dc3d18d7ef01f62a8ff7317871f7597e28Affected eb627e17727ebeede70697ae1798688b0d328b54 to before 78a228f0aa0e9eba31955950c8a40a9945e2c8bbAffected
LinuxLinux	5.4Affected before 5.4Not affected 5.10.261 through 5.10.Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

eb627e17727ebeede70697ae1798688b0d328b54 to before 6e368485a1ac19fbde0a8b6a332d4545ae72a8acAffected
eb627e17727ebeede70697ae1798688b0d328b54 to before ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2bAffected
eb627e17727ebeede70697ae1798688b0d328b54 to before c3234efe21d4198945492cf7dba6859476f0f6ffAffected
eb627e17727ebeede70697ae1798688b0d328b54 to before 4de5ff924c0a8ef8166c1a68af9087826e1e8d61Affected
eb627e17727ebeede70697ae1798688b0d328b54 to before 85f966b1120874fe530edec50d28373ceb06ebcdAffected
eb627e17727ebeede70697ae1798688b0d328b54 to before 94defb18ac792fd16407d5a52ad0d3f5055c4b43Affected
eb627e17727ebeede70697ae1798688b0d328b54 to before 257b55dc3d18d7ef01f62a8ff7317871f7597e28Affected
eb627e17727ebeede70697ae1798688b0d328b54 to before 78a228f0aa0e9eba31955950c8a40a9945e2c8bbAffected

LinuxLinux

5.4Affected
before 5.4Not affected
5.10.261 through 5.10.*Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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