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🛡️ CVE-2022-50841 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

fs/ntfs3: Add overflow check for attribute size

In the Linux kernel, the following vulnerability has been resolved:

fs/ntfs3: Add overflow check for attribute size

The offset addition could overflow and pass the used size check given an

attribute with very large size (e.g., 0xffffff7f) while parsing MFT

attributes. This could lead to out-of-bound memory R/W if we try to

access the next attribute derived by Add2Ptr(attr, asize)

[ 32.963847] BUG: unable to handle page fault for address: ffff956a83c76067

[ 32.964301] #PF: supervisor read access in kernel mode

[ 32.964526] #PF: error_code(0x0000) - not-present page

[ 32.964893] PGD 4dc01067 P4D 4dc01067 PUD 0

[ 32.965316] Oops: 0000 [#1] PREEMPT SMP NOPTI

[ 32.965727] CPU: 0 PID: 243 Comm: mount Not tainted 5.19.0+ #6

[ 32.966050] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014

[ 32.966628] RIP: 0010:mi_enum_attr+0x44/0x110

[ 32.967239] Code: 89 f0 48 29 c8 48 89 c1 39 c7 0f 86 94 00 00 00 8b 56 04 83 fa 17 0f 86 88 00 00 00 89 d0 01 ca 48 01 f0 8d 4a 08 39 f9a

[ 32.968101] RSP: 0018:ffffba15c06a7c38 EFLAGS: 00000283

[ 32.968364] RAX: ffff956a83c76067 RBX: ffff956983c76050 RCX: 000000000000006f

[ 32.968651] RDX: 0000000000000067 RSI: ffff956983c760e8 RDI: 00000000000001c8

[ 32.968963] RBP: ffffba15c06a7c38 R08: 0000000000000064 R09: 00000000ffffff7f

[ 32.969249] R10: 0000000000000007 R11: ffff956983c760e8 R12: ffff95698225e000

[ 32.969870] R13: 0000000000000000 R14: ffffba15c06a7cd8 R15: ffff95698225e170

[ 32.970655] FS: 00007fdab8189e40(0000) GS:ffff9569fdc00000(0000) knlGS:0000000000000000

[ 32.971098] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

[ 32.971378] CR2: ffff956a83c76067 CR3: 0000000002c58000 CR4: 00000000000006f0

[ 32.972098] Call Trace:

[ 32.972842] <TASK>

[ 32.973341] ni_enum_attr_ex+0xda/0xf0

[ 32.974087] ntfs_iget5+0x1db/0xde0

[ 32.974386] ? slab_post_alloc_hook+0x53/0x270

[ 32.974778] ? ntfs_fill_super+0x4c7/0x12a0

[ 32.975115] ntfs_fill_super+0x5d6/0x12a0

[ 32.975336] get_tree_bdev+0x175/0x270

[ 32.975709] ? put_ntfs+0x150/0x150

[ 32.975956] ntfs_fs_get_tree+0x15/0x20

[ 32.976191] vfs_get_tree+0x2a/0xc0

[ 32.976374] ? capable+0x19/0x20

[ 32.976572] path_mount+0x484/0xaa0

[ 32.977025] ? putname+0x57/0x70

[ 32.977380] do_mount+0x80/0xa0

[ 32.977555] __x64_sys_mount+0x8b/0xe0

[ 32.978105] do_syscall_64+0x3b/0x90

[ 32.978830] entry_SYSCALL_64_after_hwframe+0x63/0xcd

[ 32.979311] RIP: 0033:0x7fdab72e948a

[ 32.980015] Code: 48 8b 0d 11 fa 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 008

[ 32.981251] RSP: 002b:00007ffd15b87588 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5

[ 32.981832] RAX: ffffffffffffffda RBX: 0000557de0aaf060 RCX: 00007fdab72e948a

[ 32.982234] RDX: 0000557de0aaf260 RSI: 0000557de0aaf2e0 RDI: 0000557de0ab7ce0

[ 32.982714] RBP: 0000000000000000 R08: 0000557de0aaf280 R09: 0000000000000020

[ 32.983046] R10: 00000000c0ed0000 R11: 0000000000000206 R12: 0000557de0ab7ce0

[ 32.983494] R13: 0000557de0aaf260 R14: 0000000000000000 R15: 00000000ffffffff

[ 32.984094] </TASK>

[ 32.984352] Modules linked in:

[ 32.984753] CR2: ffff956a83c76067

[ 32.985911] ---[ end trace 0000000000000000 ]---

[ 32.986555] RIP: 0010:mi_enum_attr+0x44/0x110

[ 32.987217] Code: 89 f0 48 29 c8 48 89 c1 39 c7 0f 86 94 00 00 00 8b 56 04 83 fa 17 0f 86 88 00 00 00 89 d0 01 ca 48 01 f0 8d 4a 08 39 f9a

[ 32.988232] RSP: 0018:ffffba15c06a7c38 EFLAGS: 00000283

[ 32.988532] RAX: ffff956a83c76067 RBX: ffff956983c76050 RCX: 000000000000006f

[ 32.988916] RDX: 0000000000000067 RSI: ffff956983c760e8 RDI: 00000000000001c8

[ 32.989356] RBP: ffffba15c06a7c38 R08: 0000000000000064 R09: 00000000ffffff7f

[ 32.989994] R10: 0000000000000007 R11: ffff956983c760e8 R12: ffff95698225e000

[ 32.990415] R13: 0000000000000000 R14: ffffba15c06a7cd8 R15: ffff95698225e170

[ 32.991011] FS:

---truncated---

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: Required — someone has to click, open or visit something.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

CVE-2022-50841 is recorded against 2 packages.

  • kernel (from 6.1.0 up to 6.1.3)
  • unknown

Timeline and source

Published on 30 December 2025 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2022-50841 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-12-30
Updated 2026-08-20
Modified 2026-08-12
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel 6.1.0 6.1.3
unknown — —

Similar Threats

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