f2fs: vm_unmap_ram() may be called from an invalid context

{
  "id": "25aa1a1ad404a902cedbc4d78fccfd659f7892f5c52862589754c48a5a6f782d",
  "url": "https://osv.dev/vulnerability/CVE-2025-39731",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "f2fs: vm_unmap_ram() may be called from an invalid context",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: f2fs: vm_unmap_ram() may be called from an invalid context When testing F2FS with xfstests using UFS backed virtual disks the kernel complains sometimes that f2fs_release_decomp_mem() calls vm_unmap_ram() from an invalid context. Example trace from f2fs/007 test: f2fs/007 5s ... [12:59:38][ 8.902525] run fstests f2fs/007 [ 11.468026] BUG: sleeping function called from invalid context at mm/vmalloc.c:2978 [ 11.471849] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 68, name: irq/22-ufshcd [ 11.475357] preempt_count: 1, expected: 0 [ 11.476970] RCU nest depth: 0, expected: 0 [ 11.478531] CPU: 0 UID: 0 PID: 68 Comm: irq/22-ufshcd Tainted: G W 6.16.0-rc5-xfstests-ufs-g40f92e79b0aa #9 PREEMPT(none) [ 11.478535] Tainted: [W]=WARN [ 11.478536] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.478537] Call Trace: [ 11.478543] [ 11.478545] dump_stack_lvl+0x4e/0x70 [ 11.478554] __might_resched.cold+0xaf/0xbe [ 11.478557] vm_unmap_ram+0x21/0xb0 [ 11.478560] f2fs_release_decomp_mem+0x59/0x80 [ 11.478563] f2fs_free_dic+0x18/0x1a0 [ 11.478565] f2fs_finish_read_bio+0xd7/0x290 [ 11.478570] blk_update_request+0xec/0x3b0 [ 11.478574] ? sbitmap_queue_clear+0x3b/0x60 [ 11.478576] scsi_end_request+0x27/0x1a0 [ 11.478582] scsi_io_completion+0x40/0x300 [ 11.478583] ufshcd_mcq_poll_cqe_lock+0xa3/0xe0 [ 11.478588] ufshcd_sl_intr+0x194/0x1f0 [ 11.478592] ufshcd_threaded_intr+0x68/0x",
    "evidence": "osv:CVE-2025-39731",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.148",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.102",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.42",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.15.10",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.16.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-39731",
      "aliases": [
        "CVE-2025-39731"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                {
                  "fixed": "eb69e69a5ae6c8350957893b5f68bd55b1565fb2"
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                {
                  "fixed": "1023836d1b9465593c8746f97d608da32958785f"
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                {
                  "fixed": "0fe7976b62546f1e95eebfe9879925e9aa22b7a8"
                },
                {
                  "fixed": "411e00f44e2e1a7fdb526013b25a7f0ed22a0947"
                },
                {
                  "fixed": "18eea36f4f460ead3750ed4afe5496f7ce55f99e"
                },
                {
                  "fixed": "08a7efc5b02a0620ae16aa9584060e980a69cb55"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39731.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.0.0"
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                {
                  "fixed": "6.1.148"
                }
              ]
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.102"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.42"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.15.10"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.16.0"
                },
                {
                  "fixed": "6.16.1"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39731.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.743910554Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/08a7efc5b02a0620ae16aa9584060e980a69cb55",
        "https://git.kernel.org/stable/c/0fe7976b62546f1e95eebfe9879925e9aa22b7a8",
        "https://git.kernel.org/stable/c/1023836d1b9465593c8746f97d608da32958785f",
        "https://git.kernel.org/stable/c/18eea36f4f460ead3750ed4afe5496f7ce55f99e",
        "https://git.kernel.org/stable/c/411e00f44e2e1a7fdb526013b25a7f0ed22a0947",
        "https://git.kernel.org/stable/c/eb69e69a5ae6c8350957893b5f68bd55b1565fb2",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39731.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-39731",
        "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/2025/39xxx/CVE-2025-39731.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-39731",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 521488,
  "published_at": "2025-09-07T15:16:20.023+00:00"
}