{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ce477199c53e3db5a096981c565e232498ddeae4"
            },
            {
              "fixed": "c698f6deabf680f8f4a1727ef2dc80fe78815fbf"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "97981926224afe17ba3e22e0c2b7dd8b516ee574"
            },
            {
              "fixed": "d9a7147b93624660626cd7c3b1143715699e1f5c"
            },
            {
              "fixed": "1603abb0c50420e97cf4a1feddbd5e183c5fdf86"
            },
            {
              "fixed": "80fbb0bc4d11683c88f2f9d3997ea02fcada5408"
            },
            {
              "fixed": "80320b278fea07ffcda3f57b67b61658e0a4e1ca"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.6.44"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.10.3"
            },
            {
              "fixed": "6.11"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "67d9d0b6ae4aaf2c4cef103a96a145c7fdfb15f8"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.11.0"
            },
            {
              "fixed": "6.18.55"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "7.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98545.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nata: libata-scsi: bound the ATA passthru sense descriptor writes\n\nWhen an ATA PASS-THROUGH command to an ATAPI device fails, the sense\nbuffer holds the device's REQUEST SENSE reply, and\nata_scsi_set_passthru_sense_fields() trusts its additional length\nbyte, sb[7], when adding the ATA Status Return descriptor.  A faulty\nor malicious device can use that to make the kernel read and write\npast the 96-byte buffer in three ways:\n\n- scsi_sense_desc_find() is passed sb[7] + 8 as the buffer length, so\n  its clamp against sb[7] does nothing and the walk runs off the end.\n- A type-9 descriptor found near the end is filled in unchecked.\n- A new descriptor at sb[8 + len] needs len + 22 bytes, not len + 14,\n  so len 75..82 writes up to 8 bytes past the end.\n\nReproduced with KASAN under qemu, with the emulated ATAPI REQUEST SENSE\nreply patched:\n\n  BUG: KASAN: slab-out-of-bounds in scsi_sense_desc_find+0x1a5/0x210\n  BUG: KASAN: slab-out-of-bounds in ata_scsi_qc_complete+0x1a15/0x1a50\n\nBoth are gone with this patch, and a valid descriptor is still filled\nin.",
  "id": "CVE-2026-98545",
  "modified": "2026-10-20T02:31:04.779379698Z",
  "published": "2026-10-18T15:18:13.949Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1603abb0c50420e97cf4a1feddbd5e183c5fdf86"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/80320b278fea07ffcda3f57b67b61658e0a4e1ca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/80fbb0bc4d11683c88f2f9d3997ea02fcada5408"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c698f6deabf680f8f4a1727ef2dc80fe78815fbf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9a7147b93624660626cd7c3b1143715699e1f5c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98545.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98545"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ata: libata-scsi: bound the ATA passthru sense descriptor writes"
}