{"id":"CVE-2026-90120","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v5: Check get_logical_index() return value in MADT IAFFID parsing\n\nIn gic_acpi_parse_iaffid() a given MADT GICC entry might not correspond\nto a logical cpu …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v5: Check get_logical_index() return value in MADT IAFFID parsing\n\nIn gic_acpi_parse_iaffid() a given MADT GICC entry might not correspond\nto a logical cpu …","severity":"high","cvss":8.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 35866efa52feaf48cc54a0745851a555654e1446 < 6caeb878f809bdf0aec2fdd96f3d41ef4b69fc69","Linux >= 35866efa52feaf48cc54a0745851a555654e1446 < 328affc639ce9873a7a0a3fd6b8339f19767529b","Linux 7.0"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:17:42.750","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90120","references":[{"url":"https://git.kernel.org/stable/c/328affc639ce9873a7a0a3fd6b8339f19767529b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6caeb878f809bdf0aec2fdd96f3d41ef4b69fc69","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00186,"epssPercentile":0.0846,"ingestedAt":"2026-09-17T16:21:47.884Z","slug":"CVE-2026-90120","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v5: Check get_logical_index() return value in MADT IAFFID parsing\n\nIn gic_acpi_parse_iaffid() a given MADT GICC entry might not correspond\nto a logical cpu recognized by the kernel, resulting in the cpu variable\ninitialization to an error value.\n\nCurrently, the get_logical_index() return value is not checked for failure,\nwhich might result in out-of-bounds memory corruption while trying to\nindex a per_cpu variable array.\n\nAdd a check to evaluate get_logical_index() return value.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":46.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207129,"id":"CVE-2026-90120","ts":1789757334403,"field":"cvss","old":null,"new":"8.4"},{"seq":207128,"id":"CVE-2026-90120","ts":1789757334403,"field":"severity","old":"none","new":"high"}]}