{"id":"CVE-2026-98282","revision":"4d009c4c838f4a3eb76f26fe01af71b6","records":[{"revision":"4d009c4c838f4a3eb76f26fe01af71b6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98282","aliases":[],"title":"powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba\n\nThe commit b1af23d836f8 (\"KVM: PPC: iommu: Unify TCE checking\") unified\nIOBA parameter checking across KVM and VFIO into iommu_tce_check_ioba().\nWhile doing so, the passed in argument npages is ignored and constant\nvalue '1' is used leaving out a possible overflow as the callers can\nlegitimately be using npages > 1 for H_STUFF_TCE or H_PUT_TCE_INDIRECT\ncases.\n\nFix this by accounting for 'npages', checking for arithmetic overflow,\nand verifying that the entire requested range (ioba - offset + npages)\ndoes not exceed the table capacity 'size'.","state":0,"publishedAt":"2026-10-06T08:45:43.775+00:00","modifiedAt":"2026-10-19T09:16:53.78+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                        \"arch/powerpc/kernel/iommu.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"b1af23d836f811137d504d14d4cbdd01929dec34\",\n                            \"lessThan\": \"98d8dcc4ebd10523507d4478e148809a7771a213\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b1af23d836f811137d504d14d4cbdd01929dec34\",\n                            \"lessThan\": \"9fd9c9bbb05417f468a11fb6d145d7ff61f4a868\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b1af23d836f811137d504d14d4cbdd01929dec34\",\n                            \"lessThan\": \"3776bf56e06980e8a12c8c0565d9e6ac44965f03\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b1af23d836f811137d504d14d4cbdd01929dec34\",\n                            \"lessThan\": \"d6a1779129d936bc1fbab80181165da544eab736\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b1af23d836f811137d504d14d4cbdd01929dec34\",\n                            \"lessThan\": \"d48ceb6e1a6915c7bac4f902554a1047365cdff2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b1af23d836f811137d504d14d4cbdd01929dec34\",\n                            \"lessThan\": \"0543813753ef5cfbd6fa96694f7acf783fa01af7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b1af23d836f811137d504d14d4cbdd01929dec34\",\n                            \"lessThan\": \"314091243159f8e3749bc719bb129f423f72fd86\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b1af23d836f811137d504d14d4cbdd01929dec34\",\n                            \"lessThan\": \"0b271f7d7f5ed45bc498a03ce0aa9cfd8402fc71\",\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                        \"arch/powerpc/kernel/iommu.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.12\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.271\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\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:L/UI:N/S:C/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/98d8dcc4ebd10523507d4478e148809a7771a213","https://git.kernel.org/stable/c/9fd9c9bbb05417f468a11fb6d145d7ff61f4a868","https://git.kernel.org/stable/c/3776bf56e06980e8a12c8c0565d9e6ac44965f03","https://git.kernel.org/stable/c/d6a1779129d936bc1fbab80181165da544eab736","https://git.kernel.org/stable/c/d48ceb6e1a6915c7bac4f902554a1047365cdff2","https://git.kernel.org/stable/c/0543813753ef5cfbd6fa96694f7acf783fa01af7","https://git.kernel.org/stable/c/314091243159f8e3749bc719bb129f423f72fd86","https://git.kernel.org/stable/c/0b271f7d7f5ed45bc498a03ce0aa9cfd8402fc71"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98282","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98282","identifiers":["CVE-2026-98282"]},"retained":false,"historicalAffected":[]}],"coverage":[]}