{"id":"CVE-2026-89470","revision":"6871c0433e3e4e2cb9c415c4b0053c41","records":[{"revision":"6871c0433e3e4e2cb9c415c4b0053c41","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89470","aliases":[],"title":"power: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS\n\nCurrently the cros_usbpd-charger driver probe iterates based on raw\ncharger port count returned by the embedded controller. The only check\nis against the number of USB PD ports which the embedded controller\nalso defines. A malicious embedded controller could return an inaccurate\nport count (up to 255) resulting in an out of bounds write and\nsubsequent memory corruption.\n\nUpdate helper functions in cros_usbpd-charger to limit port counts to\nEC_USB_PD_MAX_PORTS.","state":0,"publishedAt":"2026-09-11T19:43:29.206+00:00","modifiedAt":"2026-10-19T08:47:19.356+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/power/supply/cros_usbpd-charger.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3af15cfacd1eef7f223802d49a88cae23c509183\",\n                            \"lessThan\": \"e951b65ef1699439079b723ca5c72cbe44771647\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3af15cfacd1eef7f223802d49a88cae23c509183\",\n                            \"lessThan\": \"3ce9218639ff62d011eb8aca0943aa670a654c7b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3af15cfacd1eef7f223802d49a88cae23c509183\",\n                            \"lessThan\": \"dce1750ddbd3380b1f6090dda2b07d2ebea2261d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3af15cfacd1eef7f223802d49a88cae23c509183\",\n                            \"lessThan\": \"3262977a05b23d1be9fc86727a2b490ec997543e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3af15cfacd1eef7f223802d49a88cae23c509183\",\n                            \"lessThan\": \"fd5f289cca04ad869b34fc9ccb647670bfdb60ac\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3af15cfacd1eef7f223802d49a88cae23c509183\",\n                            \"lessThan\": \"4b1f2be1e1b74a50386ba718de3d62bfcf5ee701\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3af15cfacd1eef7f223802d49a88cae23c509183\",\n                            \"lessThan\": \"304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3af15cfacd1eef7f223802d49a88cae23c509183\",\n                            \"lessThan\": \"657cd3a42e937276262c0a8ae6b01a87004309de\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/power/supply/cros_usbpd-charger.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.20\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.20\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.4,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/e951b65ef1699439079b723ca5c72cbe44771647","https://git.kernel.org/stable/c/3ce9218639ff62d011eb8aca0943aa670a654c7b","https://git.kernel.org/stable/c/dce1750ddbd3380b1f6090dda2b07d2ebea2261d","https://git.kernel.org/stable/c/3262977a05b23d1be9fc86727a2b490ec997543e","https://git.kernel.org/stable/c/fd5f289cca04ad869b34fc9ccb647670bfdb60ac","https://git.kernel.org/stable/c/4b1f2be1e1b74a50386ba718de3d62bfcf5ee701","https://git.kernel.org/stable/c/304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60","https://git.kernel.org/stable/c/657cd3a42e937276262c0a8ae6b01a87004309de"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89470","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89470","identifiers":["CVE-2026-89470"]},"retained":false,"historicalAffected":[]}],"coverage":[]}