CVE-2025-71107

MEDIUM EPSS 5.5%
Published Jan 14, 20265mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jan 14, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
5.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 13

VendorProductVersionRange
linuxlinux_kernel*≥6.4.16  –  <6.5
linuxlinux_kernel*≥6.5.1  –  <6.6.120
linuxlinux_kernel*≥6.7  –  <6.12.64
linuxlinux_kernel*≥6.13  –  <6.18.3
linuxlinux_kernel6.5any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any

References 4

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

Remediation

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