{"id":"CVE-2026-68400","revision":"3212e6744d02457b93c5dc47268b4684","records":[{"revision":"3212e6744d02457b93c5dc47268b4684","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68400","aliases":[],"title":"firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation\n\nUse the descriptor's `ep_mem_offset` to calculate the start of the endpoint\nmemory access array and to comply with the FF-A spec instead of defaulting\nto `sizeof(struct ffa_mem_region)`.\nThis requires moving `ffa_mem_region_additional_setup()` earlier in the setup\nflow.\nAlso, add sanity checks to ensure the calculated descriptor offsets do not\nexceed `max_fragsize`.","state":0,"publishedAt":"2026-08-10T12:04:19.952+00:00","modifiedAt":"2026-10-21T12:43:58.807+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/firmware/arm_ffa/driver.c\",\n                        \"include/linux/arm_ffa.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"113580530ee7dc61e668b641d657920734533b9f\",\n                            \"lessThan\": \"6e902bea625b710f8bf2f40b4ae4b14fa6a33f13\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"113580530ee7dc61e668b641d657920734533b9f\",\n                            \"lessThan\": \"b39b08e6bee812514b449dc874076890e6b871a0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"113580530ee7dc61e668b641d657920734533b9f\",\n                            \"lessThan\": \"8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"113580530ee7dc61e668b641d657920734533b9f\",\n                            \"lessThan\": \"b4d961351aa84fdf0148783fb1f3a1391b8a0adb\",\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/firmware/arm_ffa/driver.c\",\n                        \"include/linux/arm_ffa.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.42\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.6\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\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:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/6e902bea625b710f8bf2f40b4ae4b14fa6a33f13","https://git.kernel.org/stable/c/b39b08e6bee812514b449dc874076890e6b871a0","https://git.kernel.org/stable/c/8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66","https://git.kernel.org/stable/c/b4d961351aa84fdf0148783fb1f3a1391b8a0adb"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68400","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68400","identifiers":["CVE-2026-68400"]},"retained":false,"historicalAffected":[]}],"coverage":[]}