CVE-2026-98363
firmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS
Description
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS scpi_dvfs_get_info() already rejected a zero opp_count, but still trusted any larger value from the SCP firmware. The shared-memory reply only holds MAX_DVFS_OPPS entries in buf.opps[]; a bigger count over-reads that array and then sizes the allocated OPP table incorrectly (garbage OPPs / OOB). The missing upper bound dates back to the original SCPI DVFS support. Reject zero and out-of-range counts in one check and return -EINVAL.
INFO
Published Date :
Oct. 6, 2026, 9:18 a.m.
Last Modified :
Oct. 6, 2026, 9:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel to the latest version.
- Verify that the SCPI firmware is configured correctly.
- Test the system for proper DVFS operation.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-98363.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-98363 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-98363
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-98363 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-98363 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 06, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS scpi_dvfs_get_info() already rejected a zero opp_count, but still trusted any larger value from the SCP firmware. The shared-memory reply only holds MAX_DVFS_OPPS entries in buf.opps[]; a bigger count over-reads that array and then sizes the allocated OPP table incorrectly (garbage OPPs / OOB). The missing upper bound dates back to the original SCPI DVFS support. Reject zero and out-of-range counts in one check and return -EINVAL. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/98xxx/CVE-2026-98363.json">CVE-2026-98363</a> Added Reference https://git.kernel.org/stable/c/0130f9ad3974a5b2ad0fa03d0b300a9fb83ed901 Added Reference https://git.kernel.org/stable/c/1aadbef648e92ca642125f188f99b0a26628e3ba Added Reference https://git.kernel.org/stable/c/32471d84a487c7fd74532bc96be56f8028cf4a3f Added Reference https://git.kernel.org/stable/c/69ec03cd481973e4be44a7158ed6c0fa06a9a5f9 Added Reference https://git.kernel.org/stable/c/7daaa684097377b66b98a832de307688a7f3bbc7 Added Reference https://git.kernel.org/stable/c/cc563a59aded6f3b02d75dcc3c0bc5e90755d99e Added Reference https://git.kernel.org/stable/c/e9887eeaa138c6b5697af3d2f7c71dc82407b154 Added Reference https://git.kernel.org/stable/c/f17865332cc4ceaac846bcd7c28badbaedfabeff