erofs: fix wrong kunmap when using LZMA on HIGHMEM platforms

{
  "id": "ce5405e2a10ce7a524e5a71e3d2897afbb21249682796c06a116ae4a535dddf9",
  "url": "https://osv.dev/vulnerability/CVE-2023-53144",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "erofs: fix wrong kunmap when using LZMA on HIGHMEM platforms",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: erofs: fix wrong kunmap when using LZMA on HIGHMEM platforms As the call trace shown, the root cause is kunmap incorrect pages: BUG: kernel NULL pointer dereference, address: 00000000 CPU: 1 PID: 40 Comm: kworker/u5:0 Not tainted 6.2.0-rc5 #4 Workqueue: erofs_worker z_erofs_decompressqueue_work EIP: z_erofs_lzma_decompress+0x34b/0x8ac z_erofs_decompress+0x12/0x14 z_erofs_decompress_queue+0x7e7/0xb1c z_erofs_decompressqueue_work+0x32/0x60 process_one_work+0x24b/0x4d8 ? process_one_work+0x1a4/0x4d8 worker_thread+0x14c/0x3fc kthread+0xe6/0x10c ? rescuer_thread+0x358/0x358 ? kthread_complete_and_exit+0x18/0x18 ret_from_fork+0x1c/0x28 ---[ end trace 0000000000000000 ]--- The bug is trivial and should be fixed now. It has no impact on !HIGHMEM platforms.",
    "evidence": "osv:CVE-2023-53144",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.20",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-53144",
      "aliases": [
        "CVE-2023-53144"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "622ceaddb7649ca328832f50ba1400af778d75fa"
                },
                {
                  "fixed": "fa4056781ac067b5946c6811459e1a36842047fd"
                },
                {
                  "fixed": "28aea8ae6cf212a5bf3ed962b27921e2029ad754"
                },
                {
                  "fixed": "8f121dfb15f7b4ab345992ce96003eb63fd608f4"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53144.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.20"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.2.7"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53144.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.535963480Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/28aea8ae6cf212a5bf3ed962b27921e2029ad754",
        "https://git.kernel.org/stable/c/8f121dfb15f7b4ab345992ce96003eb63fd608f4",
        "https://git.kernel.org/stable/c/fa4056781ac067b5946c6811459e1a36842047fd",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53144.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53144",
        "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-2023-53144.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53144",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 504591,
  "published_at": "2025-05-02T15:56:14.417+00:00"
}