{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b7c62d90c12c6cc86f10b8a62cefe0029374b6ff"
            },
            {
              "fixed": "9ad85bce62cadfdf4242f6e6bbff2a52e51d30f1"
            },
            {
              "fixed": "c66e138af626cad4210da449996ae9e07ee63add"
            },
            {
              "fixed": "ac9032882d673dd6679e1d873a2dc0131a1aeb43"
            },
            {
              "fixed": "8e4ebb6afaa34bd2e8ce52da231003d24111c2d6"
            }
          ],
          "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": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "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/2026/97xxx/CVE-2026-97551.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: initialise args-\u003etotal for parent pointer updates\n\nxfs_parent_da_args_init() builds an xfs_da_args from a zeroed\nxfs_parent_args (kmem_cache_zalloc), leaving args-\u003etotal == 0.\nxfs_da_grow_inode_int() treats that field as a running block reservation\nand subtracts from it; because it is an xfs_extlen_t (uint32_t), the\nfirst attr-fork growth wraps it to ~0U.  That defeats the free-space\ncheck in xfs_alloc_space_available(), and when it coincides with an AG\nthat has exactly zero available blocks the allocation is clamped to\nmaxlen 0 and returns -ENOSPC, which xfs_defer_finish_noroll() escalates\nto a filesystem shutdown.\n\nSet args-\u003etotal the way the log recovery path does\n(xfs_attri_recover_work(), xfs_attr_item.c:706), in the add and replace\npaths that can grow the fork.  Removals and lookups never grow it, so\nthey leave the field alone, matching that switch.",
  "id": "CVE-2026-97551",
  "modified": "2026-09-27T03:30:44.352593346Z",
  "published": "2026-09-25T10:21:44.048Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8e4ebb6afaa34bd2e8ce52da231003d24111c2d6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ad85bce62cadfdf4242f6e6bbff2a52e51d30f1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac9032882d673dd6679e1d873a2dc0131a1aeb43"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c66e138af626cad4210da449996ae9e07ee63add"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97551.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97551"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "xfs: initialise args-\u003etotal for parent pointer updates"
}