Medium 5.5Published Jan 14, 2026

CVE-2025-71107f2fs: ensure node page reads complete before f2fs_put_super() finishes

Updated under an hour ago (Oct 27, 2026, 12:10 AM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 23, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 20872584b8c0b006c007da9588a272c9e28d2e18 before c3031cf2b61f1508662fc95ef9ad505cb0882a5f; 20872584b8c0b006c007da9588a272c9e28d2e18 builds before 3b15d5f12935e9e25f9a571e680716bc9ee61025; 20872584b8c0b006c007da9588a272c9e28d2e18 builds before 0b36fae23621a09e772c8adf918b9011158f8511; 20872584b8c0b006c007da9588a272c9e28d2e18 builds before 297baa4aa263ff8f5b3d246ee16a660d76aa82c4; 0e2577074b459bba7f4016f4d725ede37d48bb22; from 6.4.16 before 6.5	CNA record
linux linux_kernel linux:linux_kernel	from 6.4.16 before 6.5; from 6.5.1 before 6.6.120; from 6.7 before 6.12.64; from 6.13 before 6.18.3; 6.5; 6.19; 6.19; 6.19; and 5 more ranges	NVD

References

References

https://git.kernel.org/stable/c/c3031cf2b61f1508662fc95ef9ad505cb0882a5f	patch
https://git.kernel.org/stable/c/3b15d5f12935e9e25f9a571e680716bc9ee61025	patch
https://git.kernel.org/stable/c/0b36fae23621a09e772c8adf918b9011158f8511	patch
https://git.kernel.org/stable/c/297baa4aa263ff8f5b3d246ee16a660d76aa82c4	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.