{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "229105e5cfd9832a9ef1368c96e0098ec3a5fbf0"
            },
            {
              "fixed": "68d459e6e609c31f96a203dd6eec60c634f155e1"
            },
            {
              "fixed": "93488ea378b4427598cace558236c110515d743b"
            },
            {
              "fixed": "a67632c8c2688d6e0091529bcefe54bc5ee80e9b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.14.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98117.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: Fix potential UAF/KASAN warning\n\nCurrently, trace_cachefiles_coherency() is being passed a pointer to a\n__be64 lain over the coherency data in struct cachefiles_xattr so that it\ncan display the first 8 bytes.  However, the data is of variable length and\ncould even be 0 bytes.  This could lead to a UAF or KASAN warning.\n\nFix this by making sure the buffer has room for at least 8 bytes and that\nthose 8 bytes are pre-cleared.\n\nFurther, those bytes are not 8-byte aligned, so fix the tracepoint to\nextract the data as four 2-byte words (they are 2-byte aligned) and\nreassemble the __be64.  The compiler will convert this into a single 8-byte\nload where the CPU supports it.",
  "id": "CVE-2026-98117",
  "modified": "2026-09-27T03:30:36.696025860Z",
  "published": "2026-09-25T10:36:02.319Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68d459e6e609c31f96a203dd6eec60c634f155e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93488ea378b4427598cace558236c110515d743b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a67632c8c2688d6e0091529bcefe54bc5ee80e9b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98117.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98117"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "cachefiles: Fix potential UAF/KASAN warning"
}