Description
In the Linux kernel, the following vulnerability has been resolved:

firmware: arm_scmi: Fix OOB in scmi_power_name_get()

scmi_power_name_get() 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
scmi_reset_name_get() does.
Published: 2026-08-28
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Apply Patch
AI Analysis

Impact

The flaw lies in scmi_power_name_get() within the ARM SCMI firmware driver, where the function fails to check the domain number provided by an external caller. This omission permits an out‑of‑bounds memory read by accessing beyond the array that stores domain names. An attacker capable of influencing the domain argument can trigger this read, which may lead to a kernel fault or the accidental exposure of kernel memory contents. Such behavior can disrupt system stability, potentially causing a crash or reboot, and represents a classic buffer overread that may result in denial of service.

Affected Systems

The vulnerability affects all Linux kernel builds that contain the ARM SCMI driver, meaning any distribution kernel that includes the linux_kernel source with the flaw remains impacted. No specific vendor or version information is provided beyond the generic Linux designation; thus any kernel versions prior to the commit that added bounds checking are susceptible.

Risk and Exploitability

The CVSS score of 7.8 indicates high severity, while the EPSS score of less than 1% suggests a low probability of exploitation at present. The vulnerability is not listed in the CISA KEV catalog. Nonetheless, because the flaw allows an attacker to induce an out‑of‑bounds read that could crash the system or possibly leak information, the risk justifies prompt remediation.

Generated by OpenCVE AI on August 29, 2026 at 09:25 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update the Linux kernel to incorporate the SCMI driver fix committed in 01613f5e4ff6c080260615392338e92e261d109b.
  • If an immediate kernel upgrade cannot be performed, disable SCMI power domain interfaces that rely on scmi_power_name_get() until the patch can be applied.
  • Apply a local patch or modify the driver to return "unknown" for out‑of‑bounds domain numbers as a temporary workaround.

Generated by OpenCVE AI on August 29, 2026 at 09:25 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 02 Sep 2026 00:15:00 +0000


Sat, 29 Aug 2026 09:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125
CWE-20

Sat, 29 Aug 2026 08:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119
CWE-129

Sat, 29 Aug 2026 06:45:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Fri, 28 Aug 2026 11:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119
CWE-129

Fri, 28 Aug 2026 07:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix OOB in scmi_power_name_get() scmi_power_name_get() 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 scmi_reset_name_get() does.
Title firmware: arm_scmi: Fix OOB in scmi_power_name_get()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-29T06:21:42.793Z

Reserved: 2026-08-26T14:34:25.779Z

Link: CVE-2026-80649

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-28T08:16:49.897

Modified: 2026-08-29T07:16:48.180

Link: CVE-2026-80649

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-08-28T00:00:00Z

Links: CVE-2026-80649 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-29T09:30:07Z

Weaknesses