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Linux Kernel CVE-2026-72207

| EUVDEUVD-2026-58965 CRITICAL
2026-08-15 416baaa9-dc9f-4396-8d5f-8c081fb06d67 GHSA-vqw4-mmgx-m8xp
Critical
Disputed · 9.8 Vendor: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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Severity by source

Sources disagree (Medium–Critical)
Vendor (416baaa9-dc9f-4396-8d5f-8c081fb06d67) PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
2.5 LOW

Triggering needs local write access to an NTFS3 volume and a specific low-MFT-space resize path (AV:L, PR:L, AC:H); impact is on-disk metadata corruption, so I:L and C/A:N.

3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0 AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
SUSE
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Red Hat
5.5 MEDIUM
qualitative

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorVendor: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

Lifecycle Timeline

5
Analysis Generated
Aug 17, 2026 - 07:39 vuln.today
CVSS changed
Aug 17, 2026 - 06:22 NVD
9.8 (CRITICAL)
Patch available
Aug 15, 2026 - 07:20 EUVD
CVE Published
Aug 15, 2026 - 06:21 cve.org
CRITICAL 9.8
CVE Published
Aug 15, 2026 - 06:21 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

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

ntfs: not change 0-byte $DATA attribute to non-resident

When ntfs_resident_attr_resize() cannot grow a resident attribute in place, it retries after converting other resident attributes to non-resident to free space in the MFT recrord.

Do not select zero-length resident $DATA attributes for this conversion. fsck treats 0-byte non-resident $DATA attribute as corruptions.

AnalysisAI

On-disk NTFS metadata corruption in the Linux kernel's NTFS3 driver arises because ntfs_resident_attr_resize() may select zero-length resident $DATA attributes when converting attributes to non-resident to free MFT record space, producing 0-byte non-resident $DATA that fsck flags as filesystem corruption. The flaw affects Linux systems writing to NTFS volumes and is a data-integrity/consistency defect rather than a memory-safety or remote-code issue; it is fixed in stable 7.1.5 and 7.2-rc1. There is no public exploit identified at time of analysis, EPSS probability is low (0.20%, 10th percentile), and it is not listed in CISA KEV. The published CVSS of 9.8 (network vector) is not consistent with a local filesystem write path and appears to be an automated over-assessment.

Technical ContextAI

The issue lives in the NTFS3 filesystem driver, which implements read/write support for Microsoft's NTFS on-disk format. In NTFS, small attribute contents (such as $DATA) are stored 'resident' inside the Master File Table (MFT) record, and larger ones are stored 'non-resident' in external clusters. When ntfs_resident_attr_resize() cannot grow a resident attribute in place, it frees MFT record space by converting other resident attributes to non-resident. The defect is that a zero-length resident $DATA attribute could be chosen for this conversion, yielding a 0-byte non-resident $DATA - a structurally invalid combination that NTFS consistency checkers (fsck/chkdsk semantics) treat as corruption. No CWE was assigned, but the root cause is an incorrect state-transition/data-handling condition producing invalid on-disk structures; it is a correctness bug in metadata management, not a classic memory-safety class.

RemediationAI

Vendor-released patch: update to Linux kernel 7.1.5 (stable) or 7.2-rc1 or later, which include commits 0aad21570197 and ceb49c372501; consumers of a distribution kernel should apply the vendor backport that references CVE-2026-72207. Apply the corresponding stable commits from git.kernel.org if maintaining a custom tree. As a compensating control until patched, avoid using the in-kernel NTFS3 driver for writable NTFS mounts on affected systems - mount NTFS volumes read-only (which prevents the attribute-resize path from executing, at the cost of losing write capability), or restrict which users/processes can mount and write to NTFS filesystems. Because the impact is on-disk corruption flagged by fsck, also run an NTFS consistency check/repair on volumes that were written by a vulnerable kernel to detect any 0-byte non-resident $DATA attributes already created. Reference the kernel.org commit links above for exact code changes.

Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Not-Affected
SUSE Linux Enterprise Desktop 15 SP7 Not-Affected
SUSE Linux Enterprise High Availability Extension 15 SP7 Not-Affected
SUSE Linux Enterprise High Availability Extension 15 SP7 Not-Affected
SUSE Linux Enterprise High Availability Extension 16.0 Not-Affected

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CVE-2026-72207 vulnerability details – vuln.today

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