CVE-2026-98363

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8cb7cf56c9fe5412de238465b27ef35b4d2801aa < e9887eeaa138c6b5697af3d2f7c71dc82407b154affected
LinuxLinux8cb7cf56c9fe5412de238465b27ef35b4d2801aa < 1aadbef648e92ca642125f188f99b0a26628e3baaffected
LinuxLinux8cb7cf56c9fe5412de238465b27ef35b4d2801aa < 7daaa684097377b66b98a832de307688a7f3bbc7affected
LinuxLinux8cb7cf56c9fe5412de238465b27ef35b4d2801aa < f17865332cc4ceaac846bcd7c28badbaedfabeffaffected
LinuxLinux8cb7cf56c9fe5412de238465b27ef35b4d2801aa < 0130f9ad3974a5b2ad0fa03d0b300a9fb83ed901affected
LinuxLinux8cb7cf56c9fe5412de238465b27ef35b4d2801aa < 69ec03cd481973e4be44a7158ed6c0fa06a9a5f9affected
LinuxLinux8cb7cf56c9fe5412de238465b27ef35b4d2801aa < cc563a59aded6f3b02d75dcc3c0bc5e90755d99eaffected
LinuxLinux8cb7cf56c9fe5412de238465b27ef35b4d2801aa < 32471d84a487c7fd74532bc96be56f8028cf4a3faffected
LinuxLinux4.4affected
LinuxLinux0 < 4.4unaffected
LinuxLinux5.10.271 <= 5.10.*unaffected
LinuxLinux5.15.222 <= 5.15.*unaffected
LinuxLinux6.1.189 <= 6.1.*unaffected
LinuxLinux6.6.158 <= 6.6.*unaffected
LinuxLinux6.12.112 <= 6.12.*unaffected
LinuxLinux6.18.54 <= 6.18.*unaffected
LinuxLinux7.2.8 <= 7.2.*unaffected
LinuxLinux7.3-rc4 <= *unaffected

Weaknesses

References