CVE-2026-80867
alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
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().
Timeline
- CVE published
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.4
References 8
git.kernel.org
- stable/c/6e368485a1ac19fbde0a8b6a332d4545ae72a8ac
- stable/c/ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2b
- stable/c/c3234efe21d4198945492cf7dba6859476f0f6ff
- stable/c/4de5ff924c0a8ef8166c1a68af9087826e1e8d61
- stable/c/85f966b1120874fe530edec50d28373ceb06ebcd
- stable/c/94defb18ac792fd16407d5a52ad0d3f5055c4b43
- stable/c/257b55dc3d18d7ef01f62a8ff7317871f7597e28
- stable/c/78a228f0aa0e9eba31955950c8a40a9945e2c8bb