{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-39868 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-39868 is a high-severity denial of service vulnerability in Linux kernel, published on 23 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-39868 and fix it if it is affected.\n\nWhat it is: CVE-2025-39868 is a high-severity denial of service vulnerability in Linux kernel, published on 23 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-39868 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-39868/ (Markdown: https://insights.sbomify.com/CVE-2025-39868/index.md)","id":"CVE-2025-39868","markdown":"https://insights.sbomify.com/CVE-2025-39868/index.md","name":"CVE-2025-39868","record":{"aliases":["BELL-CVE-2025-39868","DEBIAN-CVE-2025-39868","GHSA-p2j7-x9rq-7fhv","UBUNTU-CVE-2025-39868"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A missing fix in the EROFS filesystem causes a runtime warning during unmount, potentially leading to system instability or denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"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---","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"erofs: fix runtime warning on truncate_folio_batch_exceptionals()","id":"CVE-2025-39868","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":2,"next":{"headline":"dmaengine: ti: edma: Fix memory allocation size for queue_priority_map","id":"CVE-2025-39869"},"packages":[],"prev":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2025-39867"},"products":["Linux"],"published":"2025-09-23","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"A missing fix in the EROFS filesystem causes a runtime warning during unmount, potentially leading to system instability or denial of service.","url":"https://insights.sbomify.com/CVE-2025-39868/"}