CVE-2026-72478

Kernel service interruption via unterminated NTFS mapping pairs

Published Aug 15, 2026 · Updated Aug 15, 2026

Out-of-bounds read in Linux NTFS3 allows attackers to interrupt the kernel via a crafted NTFS volume mounted for journal replay. run_get_highest_vcn() scans packed mapping pairs for a 0x00 terminator without checking the attribute buffer length, so a missing terminator reads beyond the slab allocation. The embedded $LogFile UpdateMappingPairs record must be processed during mount, and the demonstrated result is an out-of-bounds kernel read that interrupts service.

CVSS severity7.1
High
EPSS probability0.15%
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 Linux NTFS3 allows attackers to interrupt the kernel via a crafted NTFS volume mounted for journal replay. run_get_highest_vcn() scans packed mapping pairs for a 0x00 terminator without checking the attribute buffer length, so a missing terminator reads beyond the slab allocation. The embedded $LogFile UpdateMappingPairs record must be processed during mount, and the demonstrated result is an out-of-bounds kernel read that interrupts service.

The record

CVE
CVE-2026-72478
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-127, T1499.004
Attack vector
Unavailable
Privileges
Unavailable

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=41aadf5cb482793a24e05aa136224e179a778586
  2. Affected versionversion=425de2aba0d061b3e715d51a3b1992c112ed5b99 <c69b9003332917b652175d5fa9d84158c5ed8617
  3. Affected versionversion=5.15.209 <5.16
  4. Affected versionversion=6.1.175 <6.1.178
  5. Affected versionversion=6.12.86 <6.12.97
  6. Affected versionversion=6.18.27 <6.18.40
  7. Affected versionversion=6.6.140 <6.6.145
  8. Affected versionversion=7.0.4 <7.1
  9. Affected versionversion=7.1
  10. Affected versionversion=b62567bca47408e6739dee75f02a2113548af875 <41081202eb823f5b27ff164b12010b24428100ad
  11. Affected versionversion=b62567bca47408e6739dee75f02a2113548af875 <bb11485a87fbb2254b62cfed630b699d50e57da8
  12. Affected versionversion=bbad75336870b51b81979b97613746237fcb02fe
  13. Affected versionversion=bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9 <8afc24a884aff6a6f08028bd779ee65c40054455
  14. Affected versionversion=d3012690a7065d9ca86521a525ad11e8af491d45 <a31893206588374d7d16fad387189d8165c7efd3
  15. Affected versionversion=e64f7dfcaff79e7dfff9121a382dd77f9b462f62 <c23083b472a720c3f60b147db05b25b751c7c1bf

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=41aadf5cb482793a24e05aa136224e179a778586; version=425de2aba0d061b3e715d51a3b1992c112ed5b99 <c69b9003332917b652175d5fa9d84158c5ed8617; version=5.15.209 <5.16; version=6.1.175 <6.1.178; version=6.12.86 <6.12.97; version=6.18.27 <6.18.40; version=6.6.140 <6.6.145; version=7.0.4 <7.1; version=7.1; version=b62567bca47408e6739dee75f02a2113548af875 <41081202eb823f5b27ff164b12010b24428100ad; version=b62567bca47408e6739dee75f02a2113548af875 <bb11485a87fbb2254b62cfed630b699d50e57da8; version=bbad75336870b51b81979b97613746237fcb02fe; version=bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9 <8afc24a884aff6a6f08028bd779ee65c40054455; version=d3012690a7065d9ca86521a525ad11e8af491d45 <a31893206588374d7d16fad387189d8165c7efd3; version=e64f7dfcaff79e7dfff9121a382dd77f9b462f62 <c23083b472a720c3f60b147db05b25b751c7c1bf

Published CVSS scores

7.1UbuntuCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
8.4UbuntuCVSS:3.1/AV:L/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.

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No observations available

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

Weakness, pattern, technique

CWE-127Buffer Under-read
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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