btrfs: zoned: skip splitting and logical rewriting on pre-alloc write

{
  "id": "772275a6ed3460b7ddd086dea60be50eec282b9c8bd13cf22c75dcd7014b44ec",
  "url": "https://osv.dev/vulnerability/CVE-2023-54080",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "btrfs: zoned: skip splitting and logical rewriting on pre-alloc write",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: skip splitting and logical rewriting on pre-alloc write When doing a relocation, there is a chance that at the time of btrfs_reloc_clone_csums(), there is no checksum for the corresponding region. In this case, btrfs_finish_ordered_zoned()'s sum points to an invalid item and so ordered_extent's logical is set to some invalid value. Then, btrfs_lookup_block_group() in btrfs_zone_finish_endio() failed to find a block group and will hit an assert or a null pointer dereference as following. This can be reprodcued by running btrfs/028 several times (e.g, 4 to 16 times) with a null_blk setup. The device's zone size and capacity is set to 32 MB and the storage size is set to 5 GB on my setup. KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f] CPU: 6 PID: 3105720 Comm: kworker/u16:13 Tainted: G W 6.5.0-rc6-kts+ #1 Hardware name: Supermicro Super Server/X10SRL-F, BIOS 2.0 12/17/2015 Workqueue: btrfs-endio-write btrfs_work_helper [btrfs] RIP: 0010:btrfs_zone_finish_endio.part.0+0x34/0x160 [btrfs] Code: 41 54 49 89 fc 55 48 89 f5 53 e8 57 7d fc ff 48 8d b8 88 00 00 00 48 89 c3 48 b8 00 00 00 00 00 > 3c 02 00 0f 85 02 01 00 00 f6 83 88 00 00 00 01 0f 84 a8 00 00 RSP: 0018:ffff88833cf87b08 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000011 RSI: 0000000000000004 RDI: 0000000000000088 RBP: 0000000000000002 R08: 0000000000000001 R09: ffff",
    "evidence": "osv:CVE-2023-54080",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.5.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-54080",
      "aliases": [
        "CVE-2023-54080"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "cbfce4c7fbde23cc8bcba44822a58c728caf6ec9"
                },
                {
                  "fixed": "d3cfa44164688a076e8b476cafb5df87d07cfa63"
                },
                {
                  "fixed": "c02d35d89b317994bd713ba82e160c5e7f22d9c8"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54080.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.5.0"
                },
                {
                  "fixed": "6.5.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54080.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.599579415Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/c02d35d89b317994bd713ba82e160c5e7f22d9c8",
        "https://git.kernel.org/stable/c/d3cfa44164688a076e8b476cafb5df87d07cfa63",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54080.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-54080",
        "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/2023/54xxx/CVE-2023-54080.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-54080",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518077,
  "published_at": "2025-12-24T13:06:12.625+00:00"
}