{"id":"CVE-2026-98363","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS\n\nscpi_dvfs_get_info() already rejected a zero opp_count, but still trusted\nany larger value from the SCP f…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS\n\nscpi_dvfs_get_info() already rejected a zero opp_count, but still trusted\nany larger value from the SCP f…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa < e9887eeaa138c6b5697af3d2f7c71dc82407b154","Linux >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa < 1aadbef648e92ca642125f188f99b0a26628e3ba","Linux >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa < 7daaa684097377b66b98a832de307688a7f3bbc7","Linux >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa < f17865332cc4ceaac846bcd7c28badbaedfabeff","Linux >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa < 0130f9ad3974a5b2ad0fa03d0b300a9fb83ed901","Linux >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa < 69ec03cd481973e4be44a7158ed6c0fa06a9a5f9","Linux >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa < cc563a59aded6f3b02d75dcc3c0bc5e90755d99e","Linux >= 8cb7cf56c9fe5412de238465b27ef35b4d2801aa < 32471d84a487c7fd74532bc96be56f8028cf4a3f","Linux 4.4"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:30.297","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98363","references":[{"url":"https://git.kernel.org/stable/c/0130f9ad3974a5b2ad0fa03d0b300a9fb83ed901","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1aadbef648e92ca642125f188f99b0a26628e3ba","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/32471d84a487c7fd74532bc96be56f8028cf4a3f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/69ec03cd481973e4be44a7158ed6c0fa06a9a5f9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7daaa684097377b66b98a832de307688a7f3bbc7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cc563a59aded6f3b02d75dcc3c0bc5e90755d99e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e9887eeaa138c6b5697af3d2f7c71dc82407b154","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f17865332cc4ceaac846bcd7c28badbaedfabeff","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98363.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98363"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546378"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98363"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98363"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98363.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-10-06T08:50:17.391Z","epss":0.00171,"epssPercentile":0.06433,"cvss":4.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-787"],"slug":"CVE-2026-98363","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS\n\nscpi_dvfs_get_info() already rejected a zero opp_count, but still trusted\nany larger value from the SCP firmware. The shared-memory reply only holds\nMAX_DVFS_OPPS entries in buf.opps[]; a bigger count over-reads that array\nand then sizes the allocated OPP table incorrectly (garbage OPPs / OOB).\nThe missing upper bound dates back to the original SCPI DVFS support.\n\nReject zero and out-of-range counts in one check and return -EINVAL.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98363.json)","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":24.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":222969,"id":"CVE-2026-98363","ts":1792151819076,"field":"cvss","old":null,"new":"4.4"},{"seq":222968,"id":"CVE-2026-98363","ts":1792151819076,"field":"severity","old":"none","new":"medium"}]}