{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b1af23d836f811137d504d14d4cbdd01929dec34"
            },
            {
              "fixed": "98d8dcc4ebd10523507d4478e148809a7771a213"
            },
            {
              "fixed": "9fd9c9bbb05417f468a11fb6d145d7ff61f4a868"
            },
            {
              "fixed": "3776bf56e06980e8a12c8c0565d9e6ac44965f03"
            },
            {
              "fixed": "d6a1779129d936bc1fbab80181165da544eab736"
            },
            {
              "fixed": "d48ceb6e1a6915c7bac4f902554a1047365cdff2"
            },
            {
              "fixed": "0543813753ef5cfbd6fa96694f7acf783fa01af7"
            },
            {
              "fixed": "314091243159f8e3749bc719bb129f423f72fd86"
            },
            {
              "fixed": "0b271f7d7f5ed45bc498a03ce0aa9cfd8402fc71"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.12.0"
            },
            {
              "fixed": "5.10.271"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.222"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.189"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.54"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98282.json"
  },
  "details": "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 \u003e 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'.",
  "id": "CVE-2026-98282",
  "modified": "2026-10-08T02:30:53.632570064Z",
  "published": "2026-10-06T08:45:43.775Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0543813753ef5cfbd6fa96694f7acf783fa01af7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b271f7d7f5ed45bc498a03ce0aa9cfd8402fc71"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/314091243159f8e3749bc719bb129f423f72fd86"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3776bf56e06980e8a12c8c0565d9e6ac44965f03"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98d8dcc4ebd10523507d4478e148809a7771a213"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9fd9c9bbb05417f468a11fb6d145d7ff61f4a868"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d48ceb6e1a6915c7bac4f902554a1047365cdff2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d6a1779129d936bc1fbab80181165da544eab736"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98282.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98282"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba"
}