CVE-2025-39868 (GCVE-0-2025-39868)

Vulnerability from cvelistv5 – Published: 2025-09-23 06:00 – Updated: 2026-08-05 12:05
VLAI
Title
erofs: fix runtime warning on truncate_folio_batch_exceptionals()
Summary
In the Linux kernel, the following vulnerability has been resolved: erofs: fix runtime warning on truncate_folio_batch_exceptionals() Commit 0e2f80afcfa6("fs/dax: ensure all pages are idle prior to filesystem unmount") introduced the WARN_ON_ONCE to capture whether the filesystem has removed all DAX entries or not and applied the fix to xfs and ext4. Apply the missed fix on erofs to fix the runtime warning: [ 5.266254] ------------[ cut here ]------------ [ 5.266274] WARNING: CPU: 6 PID: 3109 at mm/truncate.c:89 truncate_folio_batch_exceptionals+0xff/0x260 [ 5.266294] Modules linked in: [ 5.266999] CPU: 6 UID: 0 PID: 3109 Comm: umount Tainted: G S 6.16.0+ #6 PREEMPT(voluntary) [ 5.267012] Tainted: [S]=CPU_OUT_OF_SPEC [ 5.267017] Hardware name: Dell Inc. OptiPlex 5000/05WXFV, BIOS 1.5.1 08/24/2022 [ 5.267024] RIP: 0010:truncate_folio_batch_exceptionals+0xff/0x260 [ 5.267076] Code: 00 00 41 39 df 7f 11 eb 78 83 c3 01 49 83 c4 08 41 39 df 74 6c 48 63 f3 48 83 fe 1f 0f 83 3c 01 00 00 43 f6 44 26 08 01 74 df <0f> 0b 4a 8b 34 22 4c 89 ef 48 89 55 90 e8 ff 54 1f 00 48 8b 55 90 [ 5.267083] RSP: 0018:ffffc900013f36c8 EFLAGS: 00010202 [ 5.267095] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 5.267101] RDX: ffffc900013f3790 RSI: 0000000000000000 RDI: ffff8882a1407898 [ 5.267108] RBP: ffffc900013f3740 R08: 0000000000000000 R09: 0000000000000000 [ 5.267113] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 5.267119] R13: ffff8882a1407ab8 R14: ffffc900013f3888 R15: 0000000000000001 [ 5.267125] FS: 00007aaa8b437800(0000) GS:ffff88850025b000(0000) knlGS:0000000000000000 [ 5.267132] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5.267138] CR2: 00007aaa8b3aac10 CR3: 000000024f764000 CR4: 0000000000f52ef0 [ 5.267144] PKRU: 55555554 [ 5.267150] Call Trace: [ 5.267154] <TASK> [ 5.267181] truncate_inode_pages_range+0x118/0x5e0 [ 5.267193] ? save_trace+0x54/0x390 [ 5.267296] truncate_inode_pages_final+0x43/0x60 [ 5.267309] evict+0x2a4/0x2c0 [ 5.267339] dispose_list+0x39/0x80 [ 5.267352] evict_inodes+0x150/0x1b0 [ 5.267376] generic_shutdown_super+0x41/0x180 [ 5.267390] kill_block_super+0x1b/0x50 [ 5.267402] erofs_kill_sb+0x81/0x90 [erofs] [ 5.267436] deactivate_locked_super+0x32/0xb0 [ 5.267450] deactivate_super+0x46/0x60 [ 5.267460] cleanup_mnt+0xc3/0x170 [ 5.267475] __cleanup_mnt+0x12/0x20 [ 5.267485] task_work_run+0x5d/0xb0 [ 5.267499] exit_to_user_mode_loop+0x144/0x170 [ 5.267512] do_syscall_64+0x2b9/0x7c0 [ 5.267523] ? __lock_acquire+0x665/0x2ce0 [ 5.267535] ? __lock_acquire+0x665/0x2ce0 [ 5.267560] ? lock_acquire+0xcd/0x300 [ 5.267573] ? find_held_lock+0x31/0x90 [ 5.267582] ? mntput_no_expire+0x97/0x4e0 [ 5.267606] ? mntput_no_expire+0xa1/0x4e0 [ 5.267625] ? mntput+0x24/0x50 [ 5.267634] ? path_put+0x1e/0x30 [ 5.267647] ? do_faccessat+0x120/0x2f0 [ 5.267677] ? do_syscall_64+0x1a2/0x7c0 [ 5.267686] ? from_kgid_munged+0x17/0x30 [ 5.267703] ? from_kuid_munged+0x13/0x30 [ 5.267711] ? __do_sys_getuid+0x3d/0x50 [ 5.267724] ? do_syscall_64+0x1a2/0x7c0 [ 5.267732] ? irqentry_exit+0x77/0xb0 [ 5.267743] ? clear_bhb_loop+0x30/0x80 [ 5.267752] ? clear_bhb_loop+0x30/0x80 [ 5.267765] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 5.267772] RIP: 0033:0x7aaa8b32a9fb [ 5.267781] Code: c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 e9 83 0d 00 f7 d8 [ 5.267787] RSP: 002b:00007ffd7c4c9468 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 5.267796] RAX: 0000000000000000 RBX: 00005a61592a8b00 RCX: 00007aaa8b32a9fb [ 5.267802] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00005a61592b2080 [ 5.267806] RBP: 00007ffd7c4c9540 R08: 00007aaa8b403b20 R09: 0000000000000020 [ 5.267812] R10: 0000000000000001 R11: 0000000000000246 R12: 00005a61592a8c00 [ 5.267817] R13: 00000000 ---truncated---
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bde708f1a65d025c45575bfe1e7bf7bdf7e71e87 , < 91c34cd6ca1bc67ccf2d104834956af56b5893de (git)
Affected: bde708f1a65d025c45575bfe1e7bf7bdf7e71e87 , < 181993bb0d626cf88cc803f4356ce5c5abe86278 (git)
Create a notification for this product.
Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.16.8 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-39868",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T19:24:11.670822Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
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            "descriptions": [
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                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-14T19:33:11.858Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/erofs/super.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "91c34cd6ca1bc67ccf2d104834956af56b5893de",
              "status": "affected",
              "version": "bde708f1a65d025c45575bfe1e7bf7bdf7e71e87",
              "versionType": "git"
            },
            {
              "lessThan": "181993bb0d626cf88cc803f4356ce5c5abe86278",
              "status": "affected",
              "version": "bde708f1a65d025c45575bfe1e7bf7bdf7e71e87",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/erofs/super.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.8",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix runtime warning on truncate_folio_batch_exceptionals()\n\nCommit 0e2f80afcfa6(\"fs/dax: ensure all pages are idle prior to\nfilesystem unmount\") introduced the WARN_ON_ONCE to capture whether\nthe filesystem has removed all DAX entries or not and applied the\nfix to xfs and ext4.\n\nApply the missed fix on erofs to fix the runtime warning:\n\n[  5.266254] ------------[ cut here ]------------\n[  5.266274] WARNING: CPU: 6 PID: 3109 at mm/truncate.c:89 truncate_folio_batch_exceptionals+0xff/0x260\n[  5.266294] Modules linked in:\n[  5.266999] CPU: 6 UID: 0 PID: 3109 Comm: umount Tainted: G S                  6.16.0+ #6 PREEMPT(voluntary)\n[  5.267012] Tainted: [S]=CPU_OUT_OF_SPEC\n[  5.267017] Hardware name: Dell Inc. OptiPlex 5000/05WXFV, BIOS 1.5.1 08/24/2022\n[  5.267024] RIP: 0010:truncate_folio_batch_exceptionals+0xff/0x260\n[  5.267076] Code: 00 00 41 39 df 7f 11 eb 78 83 c3 01 49 83 c4 08 41 39 df 74 6c 48 63 f3 48 83 fe 1f 0f 83 3c 01 00 00 43 f6 44 26 08 01 74 df \u003c0f\u003e 0b 4a 8b 34 22 4c 89 ef 48 89 55 90 e8 ff 54 1f 00 48 8b 55 90\n[  5.267083] RSP: 0018:ffffc900013f36c8 EFLAGS: 00010202\n[  5.267095] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\n[  5.267101] RDX: ffffc900013f3790 RSI: 0000000000000000 RDI: ffff8882a1407898\n[  5.267108] RBP: ffffc900013f3740 R08: 0000000000000000 R09: 0000000000000000\n[  5.267113] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000\n[  5.267119] R13: ffff8882a1407ab8 R14: ffffc900013f3888 R15: 0000000000000001\n[  5.267125] FS:  00007aaa8b437800(0000) GS:ffff88850025b000(0000) knlGS:0000000000000000\n[  5.267132] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  5.267138] CR2: 00007aaa8b3aac10 CR3: 000000024f764000 CR4: 0000000000f52ef0\n[  5.267144] PKRU: 55555554\n[  5.267150] Call Trace:\n[  5.267154]  \u003cTASK\u003e\n[  5.267181]  truncate_inode_pages_range+0x118/0x5e0\n[  5.267193]  ? save_trace+0x54/0x390\n[  5.267296]  truncate_inode_pages_final+0x43/0x60\n[  5.267309]  evict+0x2a4/0x2c0\n[  5.267339]  dispose_list+0x39/0x80\n[  5.267352]  evict_inodes+0x150/0x1b0\n[  5.267376]  generic_shutdown_super+0x41/0x180\n[  5.267390]  kill_block_super+0x1b/0x50\n[  5.267402]  erofs_kill_sb+0x81/0x90 [erofs]\n[  5.267436]  deactivate_locked_super+0x32/0xb0\n[  5.267450]  deactivate_super+0x46/0x60\n[  5.267460]  cleanup_mnt+0xc3/0x170\n[  5.267475]  __cleanup_mnt+0x12/0x20\n[  5.267485]  task_work_run+0x5d/0xb0\n[  5.267499]  exit_to_user_mode_loop+0x144/0x170\n[  5.267512]  do_syscall_64+0x2b9/0x7c0\n[  5.267523]  ? __lock_acquire+0x665/0x2ce0\n[  5.267535]  ? __lock_acquire+0x665/0x2ce0\n[  5.267560]  ? lock_acquire+0xcd/0x300\n[  5.267573]  ? find_held_lock+0x31/0x90\n[  5.267582]  ? mntput_no_expire+0x97/0x4e0\n[  5.267606]  ? mntput_no_expire+0xa1/0x4e0\n[  5.267625]  ? mntput+0x24/0x50\n[  5.267634]  ? path_put+0x1e/0x30\n[  5.267647]  ? do_faccessat+0x120/0x2f0\n[  5.267677]  ? do_syscall_64+0x1a2/0x7c0\n[  5.267686]  ? from_kgid_munged+0x17/0x30\n[  5.267703]  ? from_kuid_munged+0x13/0x30\n[  5.267711]  ? __do_sys_getuid+0x3d/0x50\n[  5.267724]  ? do_syscall_64+0x1a2/0x7c0\n[  5.267732]  ? irqentry_exit+0x77/0xb0\n[  5.267743]  ? clear_bhb_loop+0x30/0x80\n[  5.267752]  ? clear_bhb_loop+0x30/0x80\n[  5.267765]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[  5.267772] RIP: 0033:0x7aaa8b32a9fb\n[  5.267781] Code: c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 a6 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 e9 83 0d 00 f7 d8\n[  5.267787] RSP: 002b:00007ffd7c4c9468 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6\n[  5.267796] RAX: 0000000000000000 RBX: 00005a61592a8b00 RCX: 00007aaa8b32a9fb\n[  5.267802] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00005a61592b2080\n[  5.267806] RBP: 00007ffd7c4c9540 R08: 00007aaa8b403b20 R09: 0000000000000020\n[  5.267812] R10: 0000000000000001 R11: 0000000000000246 R12: 00005a61592a8c00\n[  5.267817] R13: 00000000\n---truncated---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Triggering requires local access to an already-mounted `dax=always` erofs filesystem \u2014 reading or mmap\u0027ing a file to populate DAX entries, then driving inode eviction via the shrinker or unmount. No remote or adjacent network peer can reach `truncate_folio_batch_exceptionals()` on an erofs mapping.\nAC:L - Within an erofs+DAX deployment the trigger is fully deterministic and entirely attacker-driven \u2014 read one regular flat/chunked file, then force eviction; there is no race to win and no memory layout dependency, as evidenced by the reporter hitting it on stock hardware five seconds into boot. Holding a long-term GUP pin across eviction (RDMA `ib_umem`, vfio, io_uring registered buffers) is likewise fully under attacker control.\nPR:L - The attacker needs only an unprivileged local account with read access to the DAX-mounted erofs tree \u2014 the mount itself is part of the deployment (container image over virtio-pmem, Android/ChromeOS system partition), not something the attacker must create. Populating DAX entries via read/mmap and forcing inode reclaim through memory pressure require no capabilities.\nUI:N - The attacker performs every step itself \u2014 open, read/mmap, optional GUP pin, then memory pressure to drive the inode shrinker into `evict()`. No victim action is needed beyond the pre-existing mount, which is normal system operation rather than an attacker-induced interaction.\nS:U - The corruption and the crash are confined to the kernel\u0027s page-cache and FS-DAX state within the same security authority; no hypervisor, IOMMU, or sandbox boundary is crossed by the vulnerability itself.\nC:H - Because erofs never waits for DAX pages to go idle, `dax_delete_mapping_entry()` drops the page-cache entry while a page may still be DMA-busy, and FS DAX permanently loses track of it \u2014 a pinned page can therefore keep servicing device/RDMA reads of those pmem blocks after the mount is gone and the region has been recycled to another tenant\u0027s image, disclosing data from a different security domain.\nI:H - `dax_folio_put()` clears `folio-\u003emapping` and tears a compound DAX folio down to order-0 pages (`ClearPageHead`/`clear_compound_head`) underneath a live pin \u2014 the adjacent `WARN_ON_ONCE(folio_ref_count())` documents the violated invariant \u2014 corrupting folio and refcount state on the subsequent unpin; upstream states outright that the missing break allows a busy block to be reallocated to a new file, \"leading to corruption.\"\nA:H - Eviction of any DAX erofs inode hits `WARN_ON_ONCE(1)` at `mm/truncate.c:89`, which on the hardened, cloud, and Android configurations that set `panic_on_warn` is an immediate kernel panic and full denial of service; the same path also dismantles folio state under outstanding pins, producing later crashes on unpin."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:05:46.658Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/91c34cd6ca1bc67ccf2d104834956af56b5893de"
        },
        {
          "url": "https://git.kernel.org/stable/c/181993bb0d626cf88cc803f4356ce5c5abe86278"
        }
      ],
      "title": "erofs: fix runtime warning on truncate_folio_batch_exceptionals()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39868",
    "datePublished": "2025-09-23T06:00:43.308Z",
    "dateReserved": "2025-04-16T07:20:57.143Z",
    "dateUpdated": "2026-08-05T12:05:46.658Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-39868",
      "date": "2026-08-05",
      "epss": "0.00133",
      "percentile": "0.03254"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-39868\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-23T06:15:45.940\",\"lastModified\":\"2026-06-17T09:18:40.173\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nerofs: fix runtime warning on truncate_folio_batch_exceptionals()\\n\\nCommit 0e2f80afcfa6(\\\"fs/dax: ensure all pages are idle prior to\\nfilesystem unmount\\\") introduced the WARN_ON_ONCE to capture whether\\nthe filesystem has removed all DAX entries or not and applied the\\nfix to xfs and ext4.\\n\\nApply the missed fix on erofs to fix the runtime warning:\\n\\n[  5.266254] ------------[ cut here ]------------\\n[  5.266274] WARNING: CPU: 6 PID: 3109 at mm/truncate.c:89 truncate_folio_batch_exceptionals+0xff/0x260\\n[  5.266294] Modules linked in:\\n[  5.266999] CPU: 6 UID: 0 PID: 3109 Comm: umount Tainted: G S                  6.16.0+ #6 PREEMPT(voluntary)\\n[  5.267012] Tainted: [S]=CPU_OUT_OF_SPEC\\n[  5.267017] Hardware name: Dell Inc. OptiPlex 5000/05WXFV, BIOS 1.5.1 08/24/2022\\n[  5.267024] RIP: 0010:truncate_folio_batch_exceptionals+0xff/0x260\\n[  5.267076] Code: 00 00 41 39 df 7f 11 eb 78 83 c3 01 49 83 c4 08 41 39 df 74 6c 48 63 f3 48 83 fe 1f 0f 83 3c 01 00 00 43 f6 44 26 08 01 74 df \u003c0f\u003e 0b 4a 8b 34 22 4c 89 ef 48 89 55 90 e8 ff 54 1f 00 48 8b 55 90\\n[  5.267083] RSP: 0018:ffffc900013f36c8 EFLAGS: 00010202\\n[  5.267095] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\\n[  5.267101] RDX: ffffc900013f3790 RSI: 0000000000000000 RDI: ffff8882a1407898\\n[  5.267108] RBP: ffffc900013f3740 R08: 0000000000000000 R09: 0000000000000000\\n[  5.267113] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000\\n[  5.267119] R13: ffff8882a1407ab8 R14: ffffc900013f3888 R15: 0000000000000001\\n[  5.267125] FS:  00007aaa8b437800(0000) GS:ffff88850025b000(0000) knlGS:0000000000000000\\n[  5.267132] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n[  5.267138] CR2: 00007aaa8b3aac10 CR3: 000000024f764000 CR4: 0000000000f52ef0\\n[  5.267144] PKRU: 55555554\\n[  5.267150] Call Trace:\\n[  5.267154]  \u003cTASK\u003e\\n[  5.267181]  truncate_inode_pages_range+0x118/0x5e0\\n[  5.267193]  ? save_trace+0x54/0x390\\n[  5.267296]  truncate_inode_pages_final+0x43/0x60\\n[  5.267309]  evict+0x2a4/0x2c0\\n[  5.267339]  dispose_list+0x39/0x80\\n[  5.267352]  evict_inodes+0x150/0x1b0\\n[  5.267376]  generic_shutdown_super+0x41/0x180\\n[  5.267390]  kill_block_super+0x1b/0x50\\n[  5.267402]  erofs_kill_sb+0x81/0x90 [erofs]\\n[  5.267436]  deactivate_locked_super+0x32/0xb0\\n[  5.267450]  deactivate_super+0x46/0x60\\n[  5.267460]  cleanup_mnt+0xc3/0x170\\n[  5.267475]  __cleanup_mnt+0x12/0x20\\n[  5.267485]  task_work_run+0x5d/0xb0\\n[  5.267499]  exit_to_user_mode_loop+0x144/0x170\\n[  5.267512]  do_syscall_64+0x2b9/0x7c0\\n[  5.267523]  ? __lock_acquire+0x665/0x2ce0\\n[  5.267535]  ? __lock_acquire+0x665/0x2ce0\\n[  5.267560]  ? lock_acquire+0xcd/0x300\\n[  5.267573]  ? find_held_lock+0x31/0x90\\n[  5.267582]  ? mntput_no_expire+0x97/0x4e0\\n[  5.267606]  ? mntput_no_expire+0xa1/0x4e0\\n[  5.267625]  ? mntput+0x24/0x50\\n[  5.267634]  ? path_put+0x1e/0x30\\n[  5.267647]  ? do_faccessat+0x120/0x2f0\\n[  5.267677]  ? do_syscall_64+0x1a2/0x7c0\\n[  5.267686]  ? from_kgid_munged+0x17/0x30\\n[  5.267703]  ? from_kuid_munged+0x13/0x30\\n[  5.267711]  ? __do_sys_getuid+0x3d/0x50\\n[  5.267724]  ? do_syscall_64+0x1a2/0x7c0\\n[  5.267732]  ? irqentry_exit+0x77/0xb0\\n[  5.267743]  ? clear_bhb_loop+0x30/0x80\\n[  5.267752]  ? clear_bhb_loop+0x30/0x80\\n[  5.267765]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  5.267772] RIP: 0033:0x7aaa8b32a9fb\\n[  5.267781] Code: c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 a6 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 e9 83 0d 00 f7 d8\\n[  5.267787] RSP: 002b:00007ffd7c4c9468 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6\\n[  5.267796] RAX: 0000000000000000 RBX: 00005a61592a8b00 RCX: 00007aaa8b32a9fb\\n[  5.267802] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00005a61592b2080\\n[  5.267806] RBP: 00007ffd7c4c9540 R08: 00007aaa8b403b20 R09: 0000000000000020\\n[  5.267812] R10: 0000000000000001 R11: 0000000000000246 R12: 00005a61592a8c00\\n[  5.267817] R13: 00000000\\n---truncated---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/erofs/super.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"bde708f1a65d025c45575bfe1e7bf7bdf7e71e87\",\"lessThan\":\"91c34cd6ca1bc67ccf2d104834956af56b5893de\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bde708f1a65d025c45575bfe1e7bf7bdf7e71e87\",\"lessThan\":\"181993bb0d626cf88cc803f4356ce5c5abe86278\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/erofs/super.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.16.8\",\"lessThanOrEqual\":\"6.16.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.17\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-01-14T19:24:11.670822Z\",\"id\":\"CVE-2025-39868\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.15\",\"versionEndExcluding\":\"6.16.8\",\"matchCriteriaId\":\"4CDBA6F5-ADD5-4E49-89EE-9FA2364F2685\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"327D22EF-390B-454C-BD31-2ED23C998A1C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"C730CD9A-D969-4A8E-9522-162AAF7C0EE9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"39982C4B-716E-4B2F-8196-FA301F47807D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"340BEEA9-D70D-4290-B502-FBB1032353B1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"47E4C5C0-079F-4838-971B-8C503D48FCC2\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/181993bb0d626cf88cc803f4356ce5c5abe86278\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/91c34cd6ca1bc67ccf2d104834956af56b5893de\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:19:22+00:00",
      "cve": "CVE-2025-39868",
      "id": "CVE-2025-39868",
      "initial_release_date": "2025-09-23T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: erofs: fix runtime warning on truncate_folio_batch_exceptionals()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-39868.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-31T01:05:37Z",
      "cve": "CVE-2025-39868",
      "id": "CVE-2025-39868",
      "initial_release_date": "2025-09-23T23:23:46Z",
      "product_status:known_not_affected": "416",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-39868",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-39868.json",
      "version": "7"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-39868\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T19:24:11.670822Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T19:24:06.662Z\"}}], \"cna\": {\"title\": \"erofs: fix runtime warning on truncate_folio_batch_exceptionals()\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"bde708f1a65d025c45575bfe1e7bf7bdf7e71e87\", \"lessThan\": \"91c34cd6ca1bc67ccf2d104834956af56b5893de\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bde708f1a65d025c45575bfe1e7bf7bdf7e71e87\", \"lessThan\": \"181993bb0d626cf88cc803f4356ce5c5abe86278\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/erofs/super.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.15\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.16.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.16.*\"}, {\"status\": \"unaffected\", \"version\": \"6.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/erofs/super.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/91c34cd6ca1bc67ccf2d104834956af56b5893de\"}, {\"url\": \"https://git.kernel.org/stable/c/181993bb0d626cf88cc803f4356ce5c5abe86278\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nerofs: fix runtime warning on truncate_folio_batch_exceptionals()\\n\\nCommit 0e2f80afcfa6(\\\"fs/dax: ensure all pages are idle prior to\\nfilesystem unmount\\\") introduced the WARN_ON_ONCE to capture whether\\nthe filesystem has removed all DAX entries or not and applied the\\nfix to xfs and ext4.\\n\\nApply the missed fix on erofs to fix the runtime warning:\\n\\n[  5.266254] ------------[ cut here ]------------\\n[  5.266274] WARNING: CPU: 6 PID: 3109 at mm/truncate.c:89 truncate_folio_batch_exceptionals+0xff/0x260\\n[  5.266294] Modules linked in:\\n[  5.266999] CPU: 6 UID: 0 PID: 3109 Comm: umount Tainted: G S                  6.16.0+ #6 PREEMPT(voluntary)\\n[  5.267012] Tainted: [S]=CPU_OUT_OF_SPEC\\n[  5.267017] Hardware name: Dell Inc. OptiPlex 5000/05WXFV, BIOS 1.5.1 08/24/2022\\n[  5.267024] RIP: 0010:truncate_folio_batch_exceptionals+0xff/0x260\\n[  5.267076] Code: 00 00 41 39 df 7f 11 eb 78 83 c3 01 49 83 c4 08 41 39 df 74 6c 48 63 f3 48 83 fe 1f 0f 83 3c 01 00 00 43 f6 44 26 08 01 74 df \u003c0f\u003e 0b 4a 8b 34 22 4c 89 ef 48 89 55 90 e8 ff 54 1f 00 48 8b 55 90\\n[  5.267083] RSP: 0018:ffffc900013f36c8 EFLAGS: 00010202\\n[  5.267095] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\\n[  5.267101] RDX: ffffc900013f3790 RSI: 0000000000000000 RDI: ffff8882a1407898\\n[  5.267108] RBP: ffffc900013f3740 R08: 0000000000000000 R09: 0000000000000000\\n[  5.267113] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000\\n[  5.267119] R13: ffff8882a1407ab8 R14: ffffc900013f3888 R15: 0000000000000001\\n[  5.267125] FS:  00007aaa8b437800(0000) GS:ffff88850025b000(0000) knlGS:0000000000000000\\n[  5.267132] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n[  5.267138] CR2: 00007aaa8b3aac10 CR3: 000000024f764000 CR4: 0000000000f52ef0\\n[  5.267144] PKRU: 55555554\\n[  5.267150] Call Trace:\\n[  5.267154]  \u003cTASK\u003e\\n[  5.267181]  truncate_inode_pages_range+0x118/0x5e0\\n[  5.267193]  ? save_trace+0x54/0x390\\n[  5.267296]  truncate_inode_pages_final+0x43/0x60\\n[  5.267309]  evict+0x2a4/0x2c0\\n[  5.267339]  dispose_list+0x39/0x80\\n[  5.267352]  evict_inodes+0x150/0x1b0\\n[  5.267376]  generic_shutdown_super+0x41/0x180\\n[  5.267390]  kill_block_super+0x1b/0x50\\n[  5.267402]  erofs_kill_sb+0x81/0x90 [erofs]\\n[  5.267436]  deactivate_locked_super+0x32/0xb0\\n[  5.267450]  deactivate_super+0x46/0x60\\n[  5.267460]  cleanup_mnt+0xc3/0x170\\n[  5.267475]  __cleanup_mnt+0x12/0x20\\n[  5.267485]  task_work_run+0x5d/0xb0\\n[  5.267499]  exit_to_user_mode_loop+0x144/0x170\\n[  5.267512]  do_syscall_64+0x2b9/0x7c0\\n[  5.267523]  ? __lock_acquire+0x665/0x2ce0\\n[  5.267535]  ? __lock_acquire+0x665/0x2ce0\\n[  5.267560]  ? lock_acquire+0xcd/0x300\\n[  5.267573]  ? find_held_lock+0x31/0x90\\n[  5.267582]  ? mntput_no_expire+0x97/0x4e0\\n[  5.267606]  ? mntput_no_expire+0xa1/0x4e0\\n[  5.267625]  ? mntput+0x24/0x50\\n[  5.267634]  ? path_put+0x1e/0x30\\n[  5.267647]  ? do_faccessat+0x120/0x2f0\\n[  5.267677]  ? do_syscall_64+0x1a2/0x7c0\\n[  5.267686]  ? from_kgid_munged+0x17/0x30\\n[  5.267703]  ? from_kuid_munged+0x13/0x30\\n[  5.267711]  ? __do_sys_getuid+0x3d/0x50\\n[  5.267724]  ? do_syscall_64+0x1a2/0x7c0\\n[  5.267732]  ? irqentry_exit+0x77/0xb0\\n[  5.267743]  ? clear_bhb_loop+0x30/0x80\\n[  5.267752]  ? clear_bhb_loop+0x30/0x80\\n[  5.267765]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  5.267772] RIP: 0033:0x7aaa8b32a9fb\\n[  5.267781] Code: c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 a6 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 e9 83 0d 00 f7 d8\\n[  5.267787] RSP: 002b:00007ffd7c4c9468 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6\\n[  5.267796] RAX: 0000000000000000 RBX: 00005a61592a8b00 RCX: 00007aaa8b32a9fb\\n[  5.267802] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00005a61592b2080\\n[  5.267806] RBP: 00007ffd7c4c9540 R08: 00007aaa8b403b20 R09: 0000000000000020\\n[  5.267812] R10: 0000000000000001 R11: 0000000000000246 R12: 00005a61592a8c00\\n[  5.267817] R13: 00000000\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.16.8\", \"versionStartIncluding\": \"6.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.17\", \"versionStartIncluding\": \"6.15\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-07-30T05:58:11.454Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-39868\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-30T05:58:11.454Z\", \"dateReserved\": \"2025-04-16T07:20:57.143Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-23T06:00:43.308Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.