CVE-2026-98363

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.

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EPSS — Exploit Prediction

0.0017

Probability of exploitation

0.06%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/0130f9ad3974a5b2ad0fa03d0b300a9fb83ed901 https://git.kernel.org/stable/c/1aadbef648e92ca642125f188f99b0a26628e3ba https://git.kernel.org/stable/c/32471d84a487c7fd74532bc96be56f8028cf4a3f https://git.kernel.org/stable/c/69ec03cd481973e4be44a7158ed6c0fa06a9a5f9 https://git.kernel.org/stable/c/7daaa684097377b66b98a832de307688a7f3bbc7 https://git.kernel.org/stable/c/cc563a59aded6f3b02d75dcc3c0bc5e90755d99e https://git.kernel.org/stable/c/e9887eeaa138c6b5697af3d2f7c71dc82407b154 https://git.kernel.org/stable/c/f17865332cc4ceaac846bcd7c28badbaedfabeff

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 do I check if I'm vulnerable to CVE-2026-98363? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.