CVE-2022-50451 - fs/ntfs3: Fix memory leak on ntfs_fill_super() error path

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MEDIUM

fs/ntfs3: Fix memory leak on ntfs_fill_super() error path

Published Oct 1, 2025

5.5

MEDIUM

CVSS 3.1

EPSS 0.16%

Description

syzbot reported kmemleak as below:

BUG: memory leak unreferenced object 0xffff8880122f1540 (size 32): comm "a.out", pid 6664, jiffies 4294939771 (age 25.500s) 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 00 00 00 ................ backtrace: [<ffffffff81b16052>] ntfs_init_fs_context+0x22/0x1c0 [<ffffffff8164aaa7>] alloc_fs_context+0x217/0x430 [<ffffffff81626dd4>] path_mount+0x704/0x1080 [<ffffffff81627e7c>] __x64_sys_mount+0x18c/0x1d0 [<ffffffff84593e14>] do_syscall_64+0x34/0xb0 [<ffffffff84600087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

This patch fixes this issue by freeing mount options on error path of ntfs_fill_super().

Affected products

Vendor Linux Product Linux Default
unaffected
- Version
  
  Status
  affected
  Constraints
  -
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
Vendor Linux Product Linux Default
unaffected
- Version
  5.15.63
  Status
  affected
  Constraints
  <5.15.87
- Version
  5.19.4
  Status
  affected
  Constraints
  <5.20
Vendor Linux Product Linux Default
affected
- Version
  6.0
  Status
  affected
  Constraints
  -
- Version
  0
  Status
  unaffected
  Constraints
  <6.0
- Version
  5.15.87
  Status
  unaffected
  Constraints
  <=5.15.*
- Version
  6.0.17
  Status
  unaffected
  Constraints
  <=6.0.*
- Version
  6.1.3
  Status
  unaffected
  Constraints
  <=6.1.*
- Version
  6.2
  Status
  unaffected
  Constraints
  <=*

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Linux

unaffected

Version	Status	Constraints
	affected	-
	affected
	affected
	affected
	affected

Linux

unaffected

Version	Status	Constraints
5.15.63	affected	<5.15.87
5.19.4	affected	<5.20

Linux

affected

Version	Status	Constraints
6.0	affected	-
0	unaffected	<6.0
5.15.87	unaffected	<=5.15.*
6.0.17	unaffected	<=6.0.*
6.1.3	unaffected	<=6.1.*
6.2	unaffected	<=*

Red Hat Enterprise Linux 10

kernel

Not affected
Red Hat Enterprise Linux 6

kernel

Not affected
Red Hat Enterprise Linux 7

kernel

Not affected
Red Hat Enterprise Linux 7

kernel-rt

Not affected
Red Hat Enterprise Linux 8

kernel

Not affected
Red Hat Enterprise Linux 8

kernel-rt

Not affected
Red Hat Enterprise Linux 9

kernel

Not affected
Red Hat Enterprise Linux 9

kernel-rt

Not affected

Product	Package	State	Advisory
Red Hat Enterprise Linux 10	kernel	Not affected	n/a
Red Hat Enterprise Linux 6	kernel	Not affected	n/a
Red Hat Enterprise Linux 7	kernel	Not affected	n/a
Red Hat Enterprise Linux 7	kernel-rt	Not affected	n/a
Red Hat Enterprise Linux 8	kernel	Not affected	n/a
Red Hat Enterprise Linux 8	kernel-rt	Not affected	n/a
Red Hat Enterprise Linux 9	kernel	Not affected	n/a
Red Hat Enterprise Linux 9	kernel-rt	Not affected	n/a

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-401

References (10)

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2022-50451		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2400710		Issue Tracking
https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-32842		Advisory
https://git.kernel.org/stable/c/2600c80ea7b39f987c3fa89287e73d62e322bbbd		Patch
https://git.kernel.org/stable/c/2dd9ccfb06bcdad30ad92d96c3affa38a458679e		Patch
https://git.kernel.org/stable/c/51e76a232f8c037f1d9e9922edc25b003d5f3414		Patch
https://git.kernel.org/stable/c/ff0df7d9cdbb12878155168b5234e99029e5377f		Patch
https://lore.kernel.org/linux-cve-announce/2025100117-CVE-2022-50451-418f@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-50451
https://www.cve.org/CVERecord?id=CVE-2022-50451