CVE-2022-50869 - fs/ntfs3: Fix slab-out-of-bounds in r_page

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HIGH

fs/ntfs3: Fix slab-out-of-bounds in r_page

Published Dec 30, 2025

7.8

HIGH

CVSS 3.1

EPSS 0.17%

Description

When PAGE_SIZE is 64K, if read_log_page is called by log_read_rst for the first time, the size of *buffer would be equal to DefaultLogPageSize(4K).But for *buffer operations like memcpy, if the memory area size(n) which being assigned to buffer is larger than 4K (log->page_size(64K) or bytes(64K-page_off)), it will cause an out of boundary error. Call trace: [...] kasan_report+0x44/0x130 check_memory_region+0xf8/0x1a0 memcpy+0xc8/0x100 ntfs_read_run_nb+0x20c/0x460 read_log_page+0xd0/0x1f4 log_read_rst+0x110/0x75c log_replay+0x1e8/0x4aa0 ntfs_loadlog_and_replay+0x290/0x2d0 ntfs_fill_super+0x508/0xec0 get_tree_bdev+0x1fc/0x34c [...]

Fix this by setting variable r_page to NULL in log_read_rst.

Affected products

Vendor Linux Product Linux Default
unaffected
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
Vendor Linux Product Linux Default
affected
- Version
  5.15
  Status
  affected
  Constraints
  -
- Version
  0
  Status
  unaffected
  Constraints
  <5.15
- 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

Linux

affected

Version	Status	Constraints
5.15	affected	-
0	unaffected	<5.15
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-787

Out-of-bounds Write

References (9)

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2022-50869		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2426217		Issue Tracking
https://git.kernel.org/stable/c/6d076293e5bffdf897ea5f975669206e09beed6a
https://git.kernel.org/stable/c/bf86a640a34947d92062996e1a75b9cd9d83dd19
https://git.kernel.org/stable/c/ecfbd57cf9c5ca225184ae266ce44ae473792132
https://git.kernel.org/stable/c/ed686e7a26dd19ae6b46bb662f735acfa88ff7bc
https://lore.kernel.org/linux-cve-announce/2025123050-CVE-2022-50869-8a8f@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-50869
https://www.cve.org/CVERecord?id=CVE-2022-50869