fs/ntfs3: Add overflow check for attribute size

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2022-50841
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-30 13:15:58 UTC
Updated2026-08-04 10:18:24 UTC
DescriptionIn 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---

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.001960000 probability, percentile 0.094890000 (date 2026-08-06)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 4342306f0f0d5ff4315a204d315c1b51b914fca5 d4489ba8fb806e07b43eecca5e9af5865d94cbf6 git Not specified
CNA Linux Linux affected 4342306f0f0d5ff4315a204d315c1b51b914fca5 a1f0b873cf6ac1f00a749707d866494ed0708978 git Not specified
CNA Linux Linux affected 4342306f0f0d5ff4315a204d315c1b51b914fca5 0bb9f93ba63acfdb7c363d9f9fc2199fc6fa913d git Not specified
CNA Linux Linux affected 4342306f0f0d5ff4315a204d315c1b51b914fca5 e19c6277652efba203af4ecd8eed4bd30a0054c9 git Not specified
CNA Linux Linux affected 5.15 Not specified
CNA Linux Linux unaffected 5.15 semver Not specified
CNA Linux Linux unaffected 5.15.87 5.15.* semver Not specified
CNA Linux Linux unaffected 6.0.17 6.0.* semver Not specified
CNA Linux Linux unaffected 6.1.3 6.1.* semver Not specified
CNA Linux Linux unaffected 6.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/a1f0b873cf6ac1f00a749707d866494ed0708978 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d4489ba8fb806e07b43eecca5e9af5865d94cbf6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e19c6277652efba203af4ecd8eed4bd30a0054c9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0bb9f93ba63acfdb7c363d9f9fc2199fc6fa913d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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