btrfs: zoned: finish active block group cleanup if call_zone_finish() fails

{
  "id": "be6f9b3c46cd46d2286473bb343ab52879bbaee2729cd96b1826628b48d44495",
  "url": "https://osv.dev/vulnerability/CVE-2026-98081",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "btrfs: zoned: finish active block group cleanup if call_zone_finish() fails",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: finish active block group cleanup if call_zone_finish() fails do_zone_finish() clears BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE before finishing the zones. If call_zone_finish() then fails it returned early, leaving the now inactive block group on fs_info->zone_active_bgs, leaking its reference, the BTRFS_FS_NEED_ZONE_FINISH waiters are never woken, and as its alloc_offset equals the zone capacity btrfs_zone_finish_one_bg() keeps selecting it, spinning btrfs_zoned_activate_one_bg(). Fall through to the cleanup on failure too and return the error, but keep the block group read-only as its zones are left inconsistent.",
    "evidence": "osv:CVE-2026-98081",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.160",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.111",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.53",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98081",
      "aliases": [
        "CVE-2026-98081"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d70cbdda75da3f258118a558c087157e073229fb"
                },
                {
                  "fixed": "433d52b196a689b18dcfadc7cf6c784f0e5cc7c9"
                },
                {
                  "fixed": "36b9cdab44848f25879ca625275c92b007f84653"
                },
                {
                  "fixed": "40370f02a1ca3760f8925ffcbe76eb4d91ea758d"
                },
                {
                  "fixed": "e1b168a53174b385e3548bfbd079513b22ac240c"
                },
                {
                  "fixed": "a18a6b93a2843b9d103d3456bbd4b3f90282a379"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98081.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.19.0"
                },
                {
                  "fixed": "6.6.160"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "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"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98081.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.106105546Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/36b9cdab44848f25879ca625275c92b007f84653",
        "https://git.kernel.org/stable/c/40370f02a1ca3760f8925ffcbe76eb4d91ea758d",
        "https://git.kernel.org/stable/c/433d52b196a689b18dcfadc7cf6c784f0e5cc7c9",
        "https://git.kernel.org/stable/c/a18a6b93a2843b9d103d3456bbd4b3f90282a379",
        "https://git.kernel.org/stable/c/e1b168a53174b385e3548bfbd079513b22ac240c",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98081.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98081",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98081.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98081",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 509075,
  "published_at": "2026-09-25T10:24:18.091+00:00"
}