CVE-2026-72210Network attack vector

Kernel data exposure via off-by-one NTFS decoding

Published Aug 15, 2026 · Updated Aug 15, 2026

Out-of-bounds read in the NTFS driver in Linux before 7.1.5 allows remote attackers to expose kernel data through crafted mapping pairs. The ntfs_mapping_pairs_decompress() checks accept a byte count ending exactly at attr_end, then index one byte beyond the attribute record while decoding VCN lengths and LCN deltas. Triggering requires an administrator to mount a crafted NTFS image; later unauthenticated SMB or NFS access can expose stale kernel data, corrupt volume data, or interrupt the host.

CVSS severity9.8
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the NTFS driver in Linux before 7.1.5 allows remote attackers to expose kernel data through crafted mapping pairs. The ntfs_mapping_pairs_decompress() checks accept a byte count ending exactly at attr_end, then index one byte beyond the attribute record while decoding VCN lengths and LCN deltas. Triggering requires an administrator to mount a crafted NTFS image; later unauthenticated SMB or NFS access can expose stale kernel data, corrupt volume data, or interrupt the host.

The record

CVE
CVE-2026-72210
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-119
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <7.1.5
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <18760a74ef7c28df93726445b5595162e62ed341
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bfe835e535fe0aa5767fdd8116f62e835ba50b55

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0 <7.1.5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <18760a74ef7c28df93726445b5595162e62ed341; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bfe835e535fe0aa5767fdd8116f62e835ba50b55

Published CVSS scores

9.8Linux CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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