Core Linux kernel ACPI flaw affects widely deployed OS kernels; can enable kernel compromise or outages across servers/desktops, impacting most organizations.
CVE-2026-97450
Linux kernel ACPI handler type validation bug allowing kernel memory corruption
Is CVE-2026-97450 being exploited?
Not confirmed. CVE-2026-97450 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-97450?
CVE-2026-97450 is rated High with a CVSS score of 8.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-97450?
Yes. A fix has been recorded for CVE-2026-97450. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-97450 affect?
CVE-2026-97450 affects Linux kernel (ACPICA/ACPI subsystem). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-97450?
Apply vendor kernel updates and reboot affected systems
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Improper ACPI handler type validation can cause kernel memory corruption enabling local privilege escalation or denial of service
Patch when possible
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < bfd981d35ed3156414fd35b4fe311d5d25cbfca6
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < 4c977d57a784682dc8c6cce2f9253ef44ec28ae8
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < c5296da2d516707862f8a2dbb4b515f777e5294f
- affected< 6.12.111
- affected< 6.18.53
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.