ubifs: ubifs_releasepage: Remove ubifs_assert(0) to valid this process

{
  "id": "3af83ba56d004d9b55391c25cefd136a47fa1e1a99ef8e66716d6912eeb64d91",
  "url": "https://osv.dev/vulnerability/CVE-2023-53584",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ubifs: ubifs_releasepage: Remove ubifs_assert(0) to valid this process",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ubifs: ubifs_releasepage: Remove ubifs_assert(0) to valid this process There are two states for ubifs writing pages: 1. Dirty, Private 2. Not Dirty, Not Private The normal process cannot go to ubifs_releasepage() which means there exists pages being private but not dirty. Reproducer[1] shows that it could occur (which maybe related to [2]) with following process: PA PB PC lock(page)[PA] ubifs_write_end attach_page_private // set Private __set_page_dirty_nobuffers // set Dirty unlock(page) write_cache_pages[PA] lock(page) clear_page_dirty_for_io(page) // clear Dirty ubifs_writepage do_truncation[PB] truncate_setsize i_size_write(inode, newsize) // newsize = 0 i_size = i_size_read(inode) // i_size = 0 end_index = i_size >> PAGE_SHIFT if (page->index > end_index) goto out // jump out: unlock(page) // Private, Not Dirty generic_fadvise[PC] lock(page) invalidate_inode_page try_to_release_page ubifs_releasepage ubifs_assert(c, 0) // bad assertion! unlock(page) truncate_pagecache[PB] Then we may get following assertion failed: UBIFS error (ubi0:0 pid 1683): ubifs_assert_failed [ubifs]: UBIFS assert failed: 0, in fs/ubifs/file.c:1513 UBIFS warning (ubi0:0 pid 1683): ubifs_ro_mode [ubifs]: switched to read-only mode, error -22 CPU: 2 PID: 1683 Comm: aa Not tainted 5.16.0-rc5-00184-g0bca5994cacc-dirty #308 Call Trace: dump_stack+0x13/0x1b ubifs_ro_mode+0x54/0x60 [ubifs] ubifs_assert_failed+0x4b/0x80 [ubifs] ubifs_relea",
    "evidence": "osv:CVE-2023-53584",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.18",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-53584",
      "aliases": [
        "CVE-2023-53584"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d"
                },
                {
                  "fixed": "7750be5d3e18500b454714677463b500a0b8b0d8"
                },
                {
                  "fixed": "bd188ff1c8a1935c93a1e3cacf3be62667fdf762"
                },
                {
                  "fixed": "66f4742e93523ab2f062d9d9828b3e590bc61536"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53584.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "2.6.27"
                },
                {
                  "fixed": "6.1.18"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.2.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53584.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:43.195422312Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/66f4742e93523ab2f062d9d9828b3e590bc61536",
        "https://git.kernel.org/stable/c/7750be5d3e18500b454714677463b500a0b8b0d8",
        "https://git.kernel.org/stable/c/bd188ff1c8a1935c93a1e3cacf3be62667fdf762",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53584.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53584",
        "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/2023/53xxx/CVE-2023-53584.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53584",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 510702,
  "published_at": "2025-10-04T15:43:59.835+00:00"
}