Unknown severity · Source severity not reportedCVE-2026-98880

ntfs3: handle set_blocksize failuresCVE-2026-98880

Answer in brief

CVE-2026-98880 records a Unknown severity vulnerability in ntfs3: handle set_blocksize failures. The current sources do not mark it as known exploited. The current feed maps 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 Oct 23, 2026Updated Oct 23, 2026Source checked Oct 25, 2026First seen by HOL Oct 23, 2026Material review Oct 23, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
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). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <df9dac4dbe557f6455a61e68cc09ef98b22f3686 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c5b8a7ec9a0a71518915c82b8552be1ccbb88288 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <78e10082f3e919b8863958feac5f269d3ade9469 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <24f7d1824b7581ae3daf9d443c5dfeabd89df6d8 \|\| >=0 <6.6.158 \|\| >=0 <6.12.111 \|\| >=0 <6.18.53	df9dac4dbe557f6455a61e68cc09ef98b22f3686, c5b8a7ec9a0a71518915c82b8552be1ccbb88288, 78e10082f3e919b8863958feac5f269d3ade9469, 24f7d1824b7581ae3daf9d443c5dfeabd89df6d8, 6.6.158, 6.12.111, 6.18.53

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux.
Review the reported fix. Update Linux/Linux to df9dac4dbe557f6455a61e68cc09ef98b22f3686 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 23, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: ntfs3: handle set_blocksize failures ntfs3 uses buffer_heads, which don't handle block size > PAGE_SIZE well. Without this, mounting we will hit the BUG_ON(offset >= folio_size(folio)); in folio_set_bh on the first __bread_gfp call.

Quoted source text, attributed separately from HOL analysis.

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). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <df9dac4dbe557f6455a61e68cc09ef98b22f3686 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c5b8a7ec9a0a71518915c82b8552be1ccbb88288 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <78e10082f3e919b8863958feac5f269d3ade9469 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <24f7d1824b7581ae3daf9d443c5dfeabd89df6d8 \|\| >=0 <6.6.158 \|\| >=0 <6.12.111 \|\| >=0 <6.18.53	df9dac4dbe557f6455a61e68cc09ef98b22f3686, c5b8a7ec9a0a71518915c82b8552be1ccbb88288, 78e10082f3e919b8863958feac5f269d3ade9469, 24f7d1824b7581ae3daf9d443c5dfeabd89df6d8, 6.6.158, 6.12.111, 6.18.53

Sources and claim methodology

Upstream source description

Quoted source text, attributed separately from HOL analysis.