high · 7.8

ntfs: reject non-resident records for resident-only attributes

CVE-2026-72198 · published 15 Aug 2026

How serious is it

  • Severity: high, CVSS score 7.8 out of 10.
  • No exploit prediction (EPSS) score yet.
  • Not on the CISA list of exploited vulnerabilities.
  • No public exploit in Exploit-DB.

Is your app affected by CVE-2026-72198?

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Who is affected

  • Linux Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 6626fb859f4c4772f2f59751d23937716e03f98f, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89, 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 to < b54c9beb90e570bae17a9c18442aeeaf17165ccb, 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 to < 097cdfd0a55df5af82c9753833f39a8bfadbcfcb
  • Linux Linux: 2.6.12, 7.1

How to check

  1. Find out whether you run the affected product and which version, then compare it with the versions above.

How to fix

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  1. Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
  2. If a vulnerable version was live, check your logs and rotate the secrets that server could read.

The advisory

In the Linux kernel, the following vulnerability has been resolved: ntfs: reject non-resident records for resident-only attributes The shared lookup-time attribute validator rejects non-resident $FILE_NAME and $VOLUME_NAME records because their formats require resident values and callers handle returned records as resident attributes. Other resident-only attribute types still pass through the generic non-resident mapping-pairs checks. That leaves real resident/non-resident union confusion paths. Inode load looks up $STANDARD_INFORMATION and then reads data.resident.value_offset without checking a->non_resident. ntfs_inode_sync_standard_information() does the same when updating the standard information value. ntfs_write_volume_flags() also looks up $VOLUME_INFORMATION and reads data.resident.value_offset directly. $INDEX_ROOT callers in dir.c and index.c depend on the same lookup contract before consuming the resident index root value. Reject non-resident records for all resident-only attribute types in the shared validator. Keep the existing $FILE_NAME and $VOLUME_NAME behavior, but factor it through a helper and extend it to $STANDARD_INFORMATION, $OBJECT_ID, $VOLUME_INFORMATION, $INDEX_ROOT, and $EA_INFORMATION. For $OBJECT_ID and $EA_INFORMATION this is contract hardening for resident-only formats; this patch only rejects the non-resident form and does not add new resident value validation for those types.

Check your whole app

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References

Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON