fs/adfs: validate nzones in adfs_validate_bblk() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.18 % · percentile 7 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: fs/adfs: validate nzones in adfs_validate_bblk() Reject ADFS disc records with a zero zone count during boot block validation, before the disc record is used. When nzones is 0, adfs_read_map() passes it to kmalloc_array(0, ...) which returns ZERO_SIZE_PTR, and adfs_map_layout() then writes to dm[-1], causing an out-of-bounds write before the allocated buffer. adfs_validate_dr0() already rejects nzones != 1 for old-format images. Add the equivalent check to adfs_validate_bblk() for new-format images so that a crafted image with nzones == 0 is rejected at probe time. Found by syzkaller.
Weaknesses (CWE)
- CWE-787 — Out-of-bounds Write
References
- https://git.kernel.org/stable/c/33aafd2418a59c96c0389d47ea09026661fa9ec6
- https://git.kernel.org/stable/c/1f0ed0f57f0fc87e46fe19a05435c214dc464be2
- https://git.kernel.org/stable/c/6ff8cca5cdb4f2e0ea6d28ecd78479dd3f221ebc
- https://git.kernel.org/stable/c/a11372a8b1ceaa5e950a84b3b5fbf8228f25e277
- https://git.kernel.org/stable/c/1586bd2d2fb436a26df20a70e78b000d34a7d159
- https://git.kernel.org/stable/c/a3fd5dc1c7b0aae947a67dc2e2c037d57557a4de
- https://git.kernel.org/stable/c/60d82592ac8b5637fbed871381eb0a16df0a492e
- https://git.kernel.org/stable/c/dd9d3e16c2d5fa166e13dce07413be51f42c8f5d
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-38860
- GCVE · GCVE-0-2026-52992
CERT-FR advisories
- CERTFR-2026-AVI-1252 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1229 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1162 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1093 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1066 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0985 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0954 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0926 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0862 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.6 < 5.10.258cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.209cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 6.1.175cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.2 < 6.6.141cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.12.91cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.18.33cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 7.0.10
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected f6f14a0d71b0773a1d4147d1a3c33d537cd213ab < 33aafd2418a59c96c0389d47ea09026661fa9ec6 ; affected f6f14a0d71b0773a1d4147d1a3c33d537cd213ab < 1f0ed0f57f0fc87e46fe19a05435c214dc464be2 ; affected f6f14a0d71b0773a1d4147d1a3c33d537cd213ab < 6ff8cca5cdb4f2e0ea6d28ecd78479dd3f221ebc ; affected f6f14a0d71b0773a1d4147d1a3c33d537cd213ab < a11372a8b1ceaa5e950a84b3b5fbf8228f25e277 ; affected f6f14a0d71b0773a1d4147d1a3c33d537cd213ab < 1586bd2d2fb436a26df20a70e78b000d34a7d159 ; affected f6f14a0d71b0773a1d4147d1a3c33d537cd213ab < a3fd5dc1c7b0aae947a67dc2e2c037d57557a4de |
| Linux · Linux | affected 5.6 ; unaffected 0 < 5.6 ; unaffected 5.10.258 ≤ 5.10.* ; unaffected 5.15.209 ≤ 5.15.* ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.141 ≤ 6.6.* |
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 |