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CVE-2026-98363

Linux: firmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 6% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in1aadbef648e92ca642125f188f99b0a26628e3baAlso 7daaa684097377b66b98a832de307688a7f3bbc7, 0130f9ad3974a5b2ad0fa03d0b300a9fb83ed901 and 2 moreCVE List
Published6 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 1aadbef648e92ca642125f188f99b0a26628e3baLinuxCVE List
  • 7daaa684097377b66b98a832de307688a7f3bbc7LinuxCVE List
  • 0130f9ad3974a5b2ad0fa03d0b300a9fb83ed901LinuxCVE List
  • 69ec03cd481973e4be44a7158ed6c0fa06a9a5f9LinuxCVE List
  • 32471d84a487c7fd74532bc96be56f8028cf4a3fLinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 18

  • Linuxaffected: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa before e9887eeaa138c6b5697af3d2f7c71dc82407b154CVE List
  • Linuxaffected: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa before 1aadbef648e92ca642125f188f99b0a26628e3baCVE List
  • Linuxaffected: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa before 7daaa684097377b66b98a832de307688a7f3bbc7CVE List
  • Linuxaffected: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa before f17865332cc4ceaac846bcd7c28badbaedfabeffCVE List
  • Linuxaffected: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa before 0130f9ad3974a5b2ad0fa03d0b300a9fb83ed901CVE List
  • Linuxaffected: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa before 69ec03cd481973e4be44a7158ed6c0fa06a9a5f9CVE List
  • Linuxaffected: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa before cc563a59aded6f3b02d75dcc3c0bc5e90755d99eCVE List
  • Linuxaffected: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa before 32471d84a487c7fd74532bc96be56f8028cf4a3fCVE List
  • Linuxaffected: 4.4CVE List
  • Linuxunaffected: all versions before 4.4CVE List
  • Linuxunaffected: 5.10.271 through 5.10.*CVE List
  • Linuxunaffected: 5.15.222 through 5.15.*CVE List
  • Linuxunaffected: 6.1.189 through 6.1.*CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.112 through 6.12.*CVE List
  • Linuxunaffected: 6.18.54 through 6.18.*CVE List
  • Linuxunaffected: 7.2.8 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 8