High7.8Red Hat & Ubuntu Linux
missing mapped-length guard after cpu_physical_memory_map causes host OOB write
CVE-2026-3842 Published Mar 9, 2026
CVE-2026-3842
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
missing mapped-length guard after cpu_physical_memory_map causes host OOB write. Red Hat rates this important (CVSS 7.8). Weakness: CWE-787. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released.
Mitigation checklist
Recommended fix / mitigation
- Red Hat rates this important; a fix erratum may not be out yet — apply the RHSA as soon as it publishes.
Official advisory · high-confidence parse· fetched 7 hours ago·verify at source
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