{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7c6c5249f061b64fc6b5b90bc147169a048691bf"
            },
            {
              "fixed": "7e2963773760a664684435201960dd2fb712f1b5"
            },
            {
              "fixed": "203c792cb4315360d49973ae2e57feeb6d3dcf7e"
            },
            {
              "fixed": "9ee1770fcb2f1b48354622b926e7dc10222805f5"
            },
            {
              "fixed": "410666a298c34ebd57256fde6b24c96bd23059a2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.10.0"
            },
            {
              "fixed": "6.12.78"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.19"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43470.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfs: return EISDIR on nfs3_proc_create if d_alias is a dir\n\nIf we found an alias through nfs3_do_create/nfs_add_or_obtain\n/d_splice_alias which happens to be a dir dentry, we don't return\nany error, and simply forget about this alias, but the original\ndentry we were adding and passed as parameter remains negative.\n\nThis later causes an oops on nfs_atomic_open_v23/finish_open since we\nsupply a negative dentry to do_dentry_open.\n\nThis has been observed running lustre-racer, where dirs and files are\ncreated/removed concurrently with the same name and O_EXCL is not\nused to open files (frequent file redirection).\n\nWhile d_splice_alias typically returns a directory alias or NULL, we\nexplicitly check d_is_dir() to ensure that we don't attempt to perform\nfile operations (like finish_open) on a directory inode, which triggers\nthe observed oops.",
  "id": "CVE-2026-43470",
  "modified": "2026-07-15T01:49:06.005498391Z",
  "published": "2026-05-08T14:22:30.218Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/203c792cb4315360d49973ae2e57feeb6d3dcf7e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/410666a298c34ebd57256fde6b24c96bd23059a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7e2963773760a664684435201960dd2fb712f1b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ee1770fcb2f1b48354622b926e7dc10222805f5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43470.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43470"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "nfs: return EISDIR on nfs3_proc_create if d_alias is a dir"
}