CVE-2022-50057

MEDIUM EPSS 4.9%
Published Jun 18, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jun 18, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix NULL deref in ntfs_update_mftmirr If ntfs_fill_super() wasn't called then sbi->sb will be equal to NULL. Code should check this ptr before dereferencing. Syzbot hit this issue via passing wrong mount param as can be seen from log below Fail log: ntfs3: Unknown parameter 'iochvrset' general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 1 PID: 3589 Comm: syz-executor210 Not tainted 5.18.0-rc3-syzkaller-00016-gb253435746d9 #0 ... Call Trace: <TASK> put_ntfs+0x1ed/0x2a0 fs/ntfs3/super.c:463 ntfs_fs_free+0x6a/0xe0 fs/ntfs3/super.c:1363 put_fs_context+0x119/0x7a0 fs/fs_context.c:469 do_new_mount+0x2b4/0xad0 fs/namespace.c:3044 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline]

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
4.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥5.15  –  <5.15.63
linuxlinux_kernel*≥5.16  –  <5.19.4
linuxlinux_kernel6.0any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/321460ca3b55f48b3ba6008248264ab2bd6407d9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8e8e1a84dac7a3d2b432162a70d7fb6a75960772
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bf6089dc01ba3194ab962105d7b85690843c256f
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/321460ca3b55f48b3ba6008248264ab2bd6407d9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8e8e1a84dac7a3d2b432162a70d7fb6a75960772
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bf6089dc01ba3194ab962105d7b85690843c256f
    Patch