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VulnerabilityPublished Updated

CVE-2025-71312: Linux kernel · fs/ntfs3: fix ntfs_mount_options leak in ntfs_fill_super()

Source GCVE Database

0
Authoritative record:CVE-2025-71312· Low

Not known to be exploited · CVSS 5.5 Low · fixed in f7edab0cee03a1cbe0e55a7bcab8d2d8b6b74278 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
5.5Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in f7edab0cee03a1cbe0e55a7bcab8d2d8b6b74278, dac871d833b09495198dcac81d2ebaa8db11acbc, d977b979081ef2585a15453f309a6311c95ede02
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade Linux kernel to f7edab0cee03a1cbe0e55a7bcab8d2d8b6b74278, dac871d833b09495198dcac81d2ebaa8db11acbc or d977b979081ef2585a15453f309a6311c95ede02.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ aee4d5a521e94f658e46c904e08a473daa9c8fc0, < f7edab0cee03a1cbe0e55a7bcab8d2d8b6b74278
Fixed in
  • f7edab0cee03a1cbe0e55a7bcab8d2d8b6b74278
LinuxLinuxAffected
  • ≥ aee4d5a521e94f658e46c904e08a473daa9c8fc0, < dac871d833b09495198dcac81d2ebaa8db11acbc
Fixed in
  • dac871d833b09495198dcac81d2ebaa8db11acbc
LinuxLinuxAffected
  • ≥ 129b0a64fe9ac5b4138cc123cccbcce7c65afdf4, < d977b979081ef2585a15453f309a6311c95ede02
Fixed in
  • d977b979081ef2585a15453f309a6311c95ede02
LinuxLinuxAffected
  • =6.19
Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: fix ntfs_mount_options leak in ntfs_fill_super() In ntfs_fill_super(), the fc->fs_private pointer is set to NULL without first freeing the memory it points to. This causes the subsequent call to ntfs_fs_free() to skip freeing the ntfs_mount_options structure. This results in a kmemleak report: unreferenced object 0xff1100015378b800 (size 32): comm "mount", pid 582, jiffies 4294890685 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 ed ff ed ff 00 04 00 00 ................ backtrace (crc ed541d8c): __kmalloc_cache_noprof+0x424/0x5a0 __ntfs_init_fs_context+0x47/0x590 alloc_fs_context+0x5d8/0x960 __x64_sys_fsopen+0xb1/0x190 do_syscall_64+0x50/0x1f0 entry_SYSCALL_64_after_hwframe+0x76/0x7e This issue can be reproduced using the following commands: fallocate -l 100M test.file mount test.file /tmp/test Since sbi->options is duplicated from fc->fs_private and does not directly use the memory allocated for fs_private, it is unnecessary to set fc->fs_private to NULL. Additionally, this patch simplifies the code by utilizing the helper function put_mount_options() instead of open-coding the cleanup logic.

References

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