CVE-2026-98363: Linux kernel · firmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 28 Oct 2026, 01:28 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
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.
References
- ubuntu.com/security/CVE-2026-98363 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98363 (opens in a new tab)
- git.kernel.org/linus/32471d84a487c7fd74532bc96be56f8028cf4a3f (opens in a new tab)
- git.kernel.org/stable/c/0130f9ad3974a5b2ad0fa03d0b300a9fb83ed901 (opens in a new tab)
- git.kernel.org/stable/c/1aadbef648e92ca642125f188f99b0a26628e3ba (opens in a new tab)
- git.kernel.org/stable/c/32471d84a487c7fd74532bc96be56f8028cf4a3f (opens in a new tab)
- git.kernel.org/stable/c/69ec03cd481973e4be44a7158ed6c0fa06a9a5f9 (opens in a new tab)
- git.kernel.org/stable/c/7daaa684097377b66b98a832de307688a7f3bbc7 (opens in a new tab)
- git.kernel.org/stable/c/cc563a59aded6f3b02d75dcc3c0bc5e90755d99e (opens in a new tab)
- git.kernel.org/stable/c/e9887eeaa138c6b5697af3d2f7c71dc82407b154 (opens in a new tab)
- git.kernel.org/stable/c/f17865332cc4ceaac846bcd7c28badbaedfabeff (opens in a new tab)