powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba (Linux Linux)
En bref
- Source
- NVD
- EPSS
- EPSS 0.13 % · centile 3 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Received
Rechercher sur…
Description
In the Linux kernel, the following vulnerability has been resolved: powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba The commit b1af23d836f8 ("KVM: PPC: iommu: Unify TCE checking") unified IOBA parameter checking across KVM and VFIO into iommu_tce_check_ioba(). While doing so, the passed in argument npages is ignored and constant value '1' is used leaving out a possible overflow as the callers can legitimately be using npages > 1 for H_STUFF_TCE or H_PUT_TCE_INDIRECT cases. Fix this by accounting for 'npages', checking for arithmetic overflow, and verifying that the entire requested range (ioba - offset + npages) does not exceed the table capacity 'size'.
Références
- https://git.kernel.org/stable/c/98d8dcc4ebd10523507d4478e148809a7771a213
- https://git.kernel.org/stable/c/9fd9c9bbb05417f468a11fb6d145d7ff61f4a868
- https://git.kernel.org/stable/c/3776bf56e06980e8a12c8c0565d9e6ac44965f03
- https://git.kernel.org/stable/c/d6a1779129d936bc1fbab80181165da544eab736
- https://git.kernel.org/stable/c/d48ceb6e1a6915c7bac4f902554a1047365cdff2
- https://git.kernel.org/stable/c/0543813753ef5cfbd6fa96694f7acf783fa01af7
- https://git.kernel.org/stable/c/314091243159f8e3749bc719bb129f423f72fd86
- https://git.kernel.org/stable/c/0b271f7d7f5ed45bc498a03ce0aa9cfd8402fc71
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-93210
- GCVE · GCVE-0-2026-98282
Avis du CERT-FR
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1374 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected b1af23d836f811137d504d14d4cbdd01929dec34 < 98d8dcc4ebd10523507d4478e148809a7771a213 ; affected b1af23d836f811137d504d14d4cbdd01929dec34 < 9fd9c9bbb05417f468a11fb6d145d7ff61f4a868 ; affected b1af23d836f811137d504d14d4cbdd01929dec34 < 3776bf56e06980e8a12c8c0565d9e6ac44965f03 ; affected b1af23d836f811137d504d14d4cbdd01929dec34 < d6a1779129d936bc1fbab80181165da544eab736 ; affected b1af23d836f811137d504d14d4cbdd01929dec34 < d48ceb6e1a6915c7bac4f902554a1047365cdff2 ; affected b1af23d836f811137d504d14d4cbdd01929dec34 < 0543813753ef5cfbd6fa96694f7acf783fa01af7 |
| Linux · Linux | affected 4.12 ; unaffected 0 < 4.12 ; unaffected 5.10.271 ≤ 5.10.* ; unaffected 5.15.222 ≤ 5.15.* ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 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 |