CVE-2026-80867
Unknown
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().
SeverityUnknown
CVSS—
Exploit probability13. percentile0.2%
Product
Linux
PublishedSep 4, 2026
First seenSep 4, 2026
How to fix
Update
- Linux Linux6e368485a1ac19fbde0a8b6a332d4545ae72a8ac, ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2b, c3234efe21d4198945492cf7dba6859476f0f6ff, 4de5ff924c0a8ef8166c1a68af9087826e1e8d61, 85f966b1120874fe530edec50d28373ceb06ebcd, 94defb18ac792fd16407d5a52ad0d3f5055c4b43, 257b55dc3d18d7ef01f62a8ff7317871f7597e28, 78a228f0aa0e9eba31955950c8a40a9945e2c8bb or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | eb627e17727ebeede70697ae1798688b0d328b54 ≤ v < 6e368485a1ac19fbde0a8b6a332d4545ae72a8ac, eb627e17727ebeede70697ae1798688b0d328b54 ≤ v < ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2b, eb627e17727ebeede70697ae1798688b0d328b54 ≤ v < c3234efe21d4198945492cf7dba6859476f0f6ff, eb627e17727ebeede70697ae1798688b0d328b54 ≤ v < 4de5ff924c0a8ef8166c1a68af9087826e1e8d61, eb627e17727ebeede70697ae1798688b0d328b54 ≤ v < 85f966b1120874fe530edec50d28373ceb06ebcd, eb627e17727ebeede70697ae1798688b0d328b54 ≤ v < 94defb18ac792fd16407d5a52ad0d3f5055c4b43, eb627e17727ebeede70697ae1798688b0d328b54 ≤ v < 257b55dc3d18d7ef01f62a8ff7317871f7597e28, eb627e17727ebeede70697ae1798688b0d328b54 ≤ v < 78a228f0aa0e9eba31955950c8a40a9945e2c8bb, 5.4 | 6e368485a1ac19fbde0a8b6a332d4545ae72a8ac, ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2b, c3234efe21d4198945492cf7dba6859476f0f6ff, 4de5ff924c0a8ef8166c1a68af9087826e1e8d61, 85f966b1120874fe530edec50d28373ceb06ebcd, 94defb18ac792fd16407d5a52ad0d3f5055c4b43, 257b55dc3d18d7ef01f62a8ff7317871f7597e28, 78a228f0aa0e9eba31955950c8a40a9945e2c8bb |
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