{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453"
            },
            {
              "fixed": "e3e9367dae1a6392cbb14ab0b2ab5edbf39735c3"
            },
            {
              "fixed": "217b967ad7887a3e1ebc08f46f6484e081acd4b4"
            },
            {
              "fixed": "3bcdbdaac884a4baa59716cf9bd9470c75276e2d"
            },
            {
              "fixed": "d7afca8e4efbf4c455b4663c29ae59fde2f1b671"
            },
            {
              "fixed": "c07e5ad6539e7e9350d5c65cbf8adb69d1711b15"
            },
            {
              "fixed": "1fc6df85b4954b6fda9c351843aaca3c06f66d8d"
            },
            {
              "fixed": "8cea0bc78ac64cb88da49c07f80bf2cf9fb7aff8"
            },
            {
              "fixed": "ce5a5ad1a8330a2fcfdd9ec2ab341be739e89a18"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.30"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90420.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix infinite loop in nilfs_clean_segments()\n\nsyzbot reported a hung task in nilfs_transaction_begin(). This occurs\nbecause the cleaner ioctl falls into an infinite loop if\nnilfs_segctor_construct() repeatedly returns -EROFS (e.g. the device\nis remounted as read-only after an I/O error).\n\nCurrently in nilfs_clean_segments(), if err is non-zero, it logs the\nerror and sleeps but doesn't abort when it encounters a terminal error\nlike -EROFS. This causes the thread to loop forever.\n\nFix this by breaking out of the loop if nilfs_segctor_construct()\nreturns -EROFS. This matches the behaviour in\nnilfs_segctor_write_out(), which also handles -EROFS.",
  "id": "CVE-2026-90420",
  "modified": "2026-09-19T03:30:42.411032418Z",
  "published": "2026-09-17T16:09:44.558Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1fc6df85b4954b6fda9c351843aaca3c06f66d8d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/217b967ad7887a3e1ebc08f46f6484e081acd4b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bcdbdaac884a4baa59716cf9bd9470c75276e2d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8cea0bc78ac64cb88da49c07f80bf2cf9fb7aff8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c07e5ad6539e7e9350d5c65cbf8adb69d1711b15"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce5a5ad1a8330a2fcfdd9ec2ab341be739e89a18"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7afca8e4efbf4c455b4663c29ae59fde2f1b671"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3e9367dae1a6392cbb14ab0b2ab5edbf39735c3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90420.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90420"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "nilfs2: fix infinite loop in nilfs_clean_segments()"
}