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CVE-2026-98363

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Last modified

CVE-2026-98363 is a vulnerability of currently unknown severity. 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..

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < e9887eeaa138c6b5697af3d2f7c71dc82407b154; >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < 1aadbef648e92ca642125f188f99b0a26628e3ba; >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < 7daaa684097377b66b98a832de307688a7f3bbc7; >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < f17865332cc4ceaac846bcd7c28badbaedfabeff; >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < 0130f9ad3974a5b2ad0fa03d0b300a9fb83ed901; >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < 69ec03cd481973e4be44a7158ed6c0fa06a9a5f9; >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < cc563a59aded6f3b02d75dcc3c0bc5e90755d99e; >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < 32471d84a487c7fd74532bc96be56f8028cf4a3f
LinuxLinux4.4

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98363?
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.
How severe is CVE-2026-98363?
Severity scoring for CVE-2026-98363 is pending analysis.
How do I fix CVE-2026-98363?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST