{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b6a06cbbb5f7fd03589cff9178314af04c568826"
            },
            {
              "fixed": "d3ff0c121bbaef026df6248ab7ef6f0b068b0647"
            },
            {
              "fixed": "cea15f66b7b68b2c50943a6660e0692c6635e4eb"
            },
            {
              "fixed": "4b3a1bf4c2ffd4c9595d900ead78c9035894a025"
            },
            {
              "fixed": "d0e877810baf613b018fd9747440b9d4d9db1428"
            },
            {
              "fixed": "ea3ab43a1f3cf2c7cecd75c8be1ee99a5e94a92e"
            },
            {
              "fixed": "5909bedbed38c558bee7cb6758ceedf9bc3a9194"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.17.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.141"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.91"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.33"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53303.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: protect extension_list reading with sb_lock in f2fs_sbi_show()\n\nIn f2fs_sbi_show(), the extension_list, extension_count and\nhot_ext_count are read without holding sbi-\u003esb_lock. If a concurrent\nsysfs store modifies the extension list via f2fs_update_extension_list(),\nthe show path may read inconsistent count and array contents, potentially\nleading to out-of-bounds access or displaying stale data.\n\nFix this by holding sb_lock around the entire extension list read\nand format operation.",
  "id": "CVE-2026-53303",
  "modified": "2026-07-08T05:37:47.759449514Z",
  "published": "2026-06-26T19:40:59.383Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b3a1bf4c2ffd4c9595d900ead78c9035894a025"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5909bedbed38c558bee7cb6758ceedf9bc3a9194"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cea15f66b7b68b2c50943a6660e0692c6635e4eb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0e877810baf613b018fd9747440b9d4d9db1428"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3ff0c121bbaef026df6248ab7ef6f0b068b0647"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ea3ab43a1f3cf2c7cecd75c8be1ee99a5e94a92e"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53303.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53303"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show()"
}