CVE-2026-80649: firmware: arm_scmi: Fix OOB in scmi_power_name_get()
In the Linux kernel, the following vulnerability has been resolved:
firmware: armscmi: Fix OOB in scmipowernameget()
scmipowernameget() does not validate the domain number passed by the external caller, which may lead to an out-of-bounds access.
Fix this by returning "unknown" for invalid domains, like scmiresetnameget() does.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
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ubuntu/linux-gcp-fipsto a version that resolves this vulnerability.Fixed in 6.8.0-1071.79+fips1 - Upgrade
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ubuntu/linuxto a version that resolves this vulnerability.Fixed in 7.0.0-38.38 - Upgrade
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ubuntu/linux-awsto a version that resolves this vulnerability.Fixed in 7.0.0-1014.14 - Upgrade
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ubuntu/linux-azureto a version that resolves this vulnerability.Fixed in 7.0.0-1017.17 - Upgrade
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ubuntu/linux-azure-fdeto a version that resolves this vulnerability.Fixed in 7.0.0-1016.16 - Upgrade
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ubuntu/linux-gcpto a version that resolves this vulnerability.Fixed in 7.0.0-1014.14 - Upgrade
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ubuntu/linux-gketo a version that resolves this vulnerability.Fixed in 7.0.0-1008.9 - Upgrade
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ubuntu/linux-riscvto a version that resolves this vulnerability.Fixed in 7.0.0-38.38.1 - Compensating control
Modify scmi_power_name_get() to validate the domain number and return "unknown" for invalid domains, matching scmi_reset_name_get().
Event History
Frequently Asked Questions
What must an attacker or triggering caller control to reach the vulnerable code?
The caller must be able to pass an invalid SCMI power domain number to scmi_power_name_get(). The vulnerability occurs because that externally supplied domain number was not validated before use.
What happens after applying the fix?
For an invalid power domain number, scmi_power_name_get() returns "unknown" instead of performing an out-of-bounds access.
How can I determine whether a system may be affected?
Review the Linux kernel source or applied stable updates for the referenced fixes. Systems whose scmi_power_name_get() does not validate externally supplied domain numbers and return "unknown" for invalid domains may be affected.