fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.16 % · percentile 6 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Deferred
Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist Index allocation requires at least one bit in the $BITMAP attribute to track usage of index entries. If the bitmap is empty while index blocks are already present, this reflects on-disk corruption. syzbot triggered this condition using a malformed NTFS image. During a rename() operation involving a long filename (which spans multiple index entries), the empty bitmap allowed the name to be added without valid tracking. Subsequent deletion of the original entry failed with -ENOENT, due to unexpected index state. Reject such cases by verifying that the bitmap is not empty when index blocks exist.
References
- https://git.kernel.org/stable/c/aab2e34b139f6df71ab2b1adeec9927c206adc79
- https://git.kernel.org/stable/c/978aac54e93ea35aab20b32ae393d3d33964e7ae
- https://git.kernel.org/stable/c/be66551da203862c689c12e1d35ce87217c017c1
- https://git.kernel.org/stable/c/039ddf353cc33f6546a87ec1ac3210637d714bec
- https://git.kernel.org/stable/c/0dc7117da8f92dd5fe077d712a756eccbe377d40
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2025-36461
- GCVE · GCVE-0-2025-40067
CERT-FR advisories
- CERTFR-2026-AVI-0602 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0421 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0397 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0371 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0331 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0227 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0194 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0169 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 47856e10f8d5e066aa26b1f9c02d933fe0620399 < aab2e34b139f6df71ab2b1adeec9927c206adc79 ; affected b35a50d639ca5259466ef5fea85529bb4fb17d5b < 978aac54e93ea35aab20b32ae393d3d33964e7ae ; affected 3ed2cc6a6e93fbeb8c0cafce1e7fb1f64a331dcc < be66551da203862c689c12e1d35ce87217c017c1 ; affected d99208b91933fd2a58ed9ed321af07dacd06ddc3 < 039ddf353cc33f6546a87ec1ac3210637d714bec ; affected d99208b91933fd2a58ed9ed321af07dacd06ddc3 < 0dc7117da8f92dd5fe077d712a756eccbe377d40 ; affected 358d4f821c03add421a4c49290538a705852ccf1 |
| Linux · Linux | affected 6.17 ; unaffected 0 < 6.17 ; unaffected 6.6.112 ≤ 6.6.* ; unaffected 6.12.53 ≤ 6.12.* ; unaffected 6.17.3 ≤ 6.17.* ; unaffected 6.18 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |