CVE-2025-71107f2fs: ensure node page reads complete before f2fs_put_super() finishes
- 5.5MediumCVSS base score
- 0.19%Exploitation in 30 daysEPSS · top 91% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: f2fs: ensure node page reads complete before f2fs_put_super() finishes Xfstests generic/335, generic/336 sometimes crash with the following message: F2FS-fs (dm-0): detect filesystem reference count leak during umount, type: 9, count: 1 ------------[ cut here ]------------ kernel BUG at fs/f2fs/super.c:1939! Oops: invalid opcode: 0000 [#1] SMP NOPTI CPU: 1 UID: 0 PID: 609351 Comm: umount Tainted: G W 6.17.0-rc5-xfstests-g9dd1835ecda5 #1 PREEMPT(none) Tainted: [W]=WARN Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:f2fs_put_super+0x3b3/0x3c0 Call Trace: <TASK> generic_shutdown_super+0x7e/0x190 kill_block_super+0x1a/0x40 kill_f2fs_super+0x9d/0x190 deactivate_locked_super+0x30/0xb0 cleanup_mnt+0xba/0x150 task_work_run+0x5c/0xa0 exit_to_user_mode_loop+0xb7/0xc0 do_syscall_64+0x1ae/0x1c0 entry_SYSCALL_64_after_hwframe+0x76/0x7e </TASK> ---[ end trace 0000000000000000 ]--- It appears that sometimes it is possible that f2fs_put_super() is called before all node page reads are completed. Adding a call to f2fs_wait_on_all_pages() for F2FS_RD_NODE fixes the problem.
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 4 months later
· 4 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.19% · top 91% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 20872584b8c0b006c007da9588a272c9e28d2e18 – < c3031cf2b61f1508662fc95ef9ad505cb0882a5f
- affected 20872584b8c0b006c007da9588a272c9e28d2e18 – < 3b15d5f12935e9e25f9a571e680716bc9ee61025
- affected 20872584b8c0b006c007da9588a272c9e28d2e18 – < 0b36fae23621a09e772c8adf918b9011158f8511
- affected 20872584b8c0b006c007da9588a272c9e28d2e18 – < 297baa4aa263ff8f5b3d246ee16a660d76aa82c4
- affected 0e2577074b459bba7f4016f4d725ede37d48bb22
- affected 6.4.16 – < 6.5
- affected 6.5
- unaffected < 6.5
- unaffected 6.6.120 – ≤ 6.6.*
- unaffected 6.12.64 – ≤ 6.12.*
- unaffected 6.18.3 – ≤ 6.18.*
- unaffected 6.19 – ≤ *
References
References4
- https://git.kernel.org/stable/c/c3031cf2b61f1508662fc95ef9ad505cb0882a5f (opens in a new tab)
- https://git.kernel.org/stable/c/3b15d5f12935e9e25f9a571e680716bc9ee61025 (opens in a new tab)
- https://git.kernel.org/stable/c/0b36fae23621a09e772c8adf918b9011158f8511 (opens in a new tab)
- https://git.kernel.org/stable/c/297baa4aa263ff8f5b3d246ee16a660d76aa82c4 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-2502 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-71107)Record last updated .