Vulnerability in Linux

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund5 Oct 2026WID-SEC-2026-3743

  Linux Kernel: Multiple vulnerabilities Translated from German

  Risk mediumCVE-2026-98221CVE-2026-98181CVE-2026-98248+204 more CVEs

[ References ]References

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