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?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
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
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- 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.
- 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
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/6626fb859f4c4772f2f59751d23937716e03f98f
- git.kernel.org/stable/c/7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89
- git.kernel.org/stable/c/b54c9beb90e570bae17a9c18442aeeaf17165ccb
- git.kernel.org/stable/c/097cdfd0a55df5af82c9753833f39a8bfadbcfcb
Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON