{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "cb85f4d23f794e24127f3e562cb3b54b0803f456"
            },
            {
              "fixed": "452950461241dfed8b1d32e94b227db38c99c5af"
            },
            {
              "fixed": "ada23457d4748d6e9c36c6f871fc29a6f558c48c"
            },
            {
              "fixed": "e4223231b6860141813637a6413c2371ae4d6fa8"
            },
            {
              "fixed": "32f7ab52875ec7f800ca67e7176e5743a84baddf"
            },
            {
              "fixed": "a897682793eba5de51ee6f3152760374afa629cf"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "eb799e163dc2bc1ea0a4820b66f79d32a5e907df"
            },
            {
              "last_affected": "bcc1eab71a67c46b9e24544ac7923f44444174ce"
            },
            {
              "last_affected": "8cf20fb73e73a4c4df0328b5297842c5ef34fdd9"
            },
            {
              "last_affected": "e5d25003d059649e18a249635ed5ca7a7b1de5ad"
            },
            {
              "last_affected": "69f8a7991fd93c49096ddd11574db3e7df238b7b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.9.215"
            },
            {
              "fixed": "4.10"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.14.172"
            },
            {
              "fixed": "4.15"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.19.107"
            },
            {
              "fixed": "4.20"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.4.23"
            },
            {
              "fixed": "5.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.5.7"
            },
            {
              "fixed": "5.6"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.6.0"
            },
            {
              "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/2026/93xxx/CVE-2026-93269.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix circular lock dependency in ext4_ext_migrate\n\nMove iput(tmp_inode) after ext4_writepages_up_write() to avoid a\ncircular lock dependency between s_writepages_rwsem and sb_internal\n(freeze protection).\n\nThe deadlock scenario:\n\n  CPU0 (EXT4_IOC_MIGRATE)        CPU1 (orphan cleanup during mount)\n  ----                           ----\n  ext4_ext_migrate()\n    ext4_writepages_down_write()\n      s_writepages_rwsem (write)\n                                 ext4_evict_inode()\n                                   sb_start_intwrite()   [sb_internal]\n                                   ...\n                                     ext4_writepages()\n                                       s_writepages_rwsem (read) [BLOCKED]\n    iput(tmp_inode)\n      ext4_evict_inode()\n        sb_start_intwrite()         [BLOCKED]\n\nThe tmp_inode is a temporary inode with nlink=0 created solely for\nbuilding the extent tree.  Its eviction does not require\ns_writepages_rwsem protection, so deferring iput() until after\nreleasing the rwsem is safe.",
  "id": "CVE-2026-93269",
  "modified": "2026-09-26T03:30:23.352570285Z",
  "published": "2026-09-24T15:52:09.047Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/32f7ab52875ec7f800ca67e7176e5743a84baddf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/452950461241dfed8b1d32e94b227db38c99c5af"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a897682793eba5de51ee6f3152760374afa629cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ada23457d4748d6e9c36c6f871fc29a6f558c48c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4223231b6860141813637a6413c2371ae4d6fa8"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93269.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93269"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ext4: fix circular lock dependency in ext4_ext_migrate"
}