ntfs: fix kmap_local leak in write_mft_record_nolock() error paths (CVE-2026-98140) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-98140

ntfs: fix kmap_local leak in write_mft_record_nolock() error paths

Answer in brief

CVE-2026-98140 records a Unknown severity vulnerability in ntfs: fix kmap_local leak in write_mft_record_nolock() error paths. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=115380f9a2f9675c7924563cbba70d40cae8fb81 <5d7f7bf8fba8cf563b42b44aa4ab3d9928ac480c \|\| >=115380f9a2f9675c7924563cbba70d40cae8fb81 <cf06dcd572845723821b54a608fc2da995c3c8e2	5d7f7bf8fba8cf563b42b44aa4ab3d9928ac480c, cf06dcd572845723821b54a608fc2da995c3c8e2
Linux/Linuxgeneric	7.1	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 5d7f7bf8fba8cf563b42b44aa4ab3d9928ac480c if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: ntfs: fix kmap_local leak in write_mft_record_nolock() error paths write_mft_record_nolock() maps the MFT record folio with kmap_local_folio(), but the pre_write_mst_fixup() and bio_add_folio() failure paths jump to the error label without unmapping it. kmap_local mappings are stack-ordered per task, so leaking one corrupts the nesting for any outer mapping. Unmap the folio on those error paths too.

Quoted source text, attributed separately from HOL analysis.