firmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.271, 5.15.222, 6.1.189, 6.12.112, 6.18.54, 6.6.158, 7.2.8
- CVEs
- CVE-2026-98363
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 00:02 UTC · Revision 1
Source evidence
firmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS
core-osv · Original sourcePublished 6 Oct 2026, 08:46 UTC
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.
osv:CVE-2026-98363
Kernel
Fixed versions: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8
Complete source record
{
"id": "d052210138eea00d374256ad94e8febfcf9bb645c664689af8b52ceb0fe05923",
"url": "https://osv.dev/vulnerability/CVE-2026-98363",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "firmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS",
"summary": "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.",
"evidence": "osv:CVE-2026-98363",
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"modified": "2026-10-28T02:30:40.516611992Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/1aadbef648e92ca642125f188f99b0a26628e3ba",
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"https://git.kernel.org/stable/c/f17865332cc4ceaac846bcd7c28badbaedfabeff",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98363.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-98363",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98363.json"
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},
"related_cves": [
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 508224,
"published_at": "2026-10-06T08:46:49.235+00:00"
}