KVM: x86/mmu: Check write tracking in all address spaces (Linux Linux)
En bref
- Source
- NVD
- EPSS
- EPSS 0.15 % · centile 4 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Modified
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Description
In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Check write tracking in all address spaces kvm_gfn_is_write_tracked() checks only the supplied memslot, but page tracking is per-address-space and shadow pages are shared across all address spaces. With SMM, a GFN can therefore be write-tracked in one address space and appear untracked through the other. Check the supplied slot first, then the slot for the other address space. This ensures all callers honor write tracking regardless of the active address space. In particular, it prevents mmu_try_to_unsync_pages() from marking an upper-level shadow page unsync and eventually triggering the BUG in pte_list_remove(). [invert direction of the conditional. - Paolo]
Faiblesses (CWE)
- CWE-670 — Flot de contrôle systématiquement incorrect
Références
- https://git.kernel.org/stable/c/09aa68552d2542cc6c23edd1568ac265dc5d886f
- https://git.kernel.org/stable/c/429b6f43b4d8c98988fdca99e02dc156134e3d77
- https://git.kernel.org/stable/c/d8636c8f9f95d0fd1e2f6f1cad0d5757aa6f212a
- https://git.kernel.org/stable/c/c0a9bd5fca0b5f2dea32b0fc31350e71e8648112
- https://git.kernel.org/stable/c/ec8fcaf354c1cbb36755d48e9f5a00c9591349e5
- https://git.kernel.org/stable/c/0f38453cdb2e17566ccb7c0f3dabd5bd21caca26
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H | Linux |
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2026-88753
- GCVE · GCVE-0-2026-98164
Avis du CERT-FR
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1335 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.2 < 6.1.187cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.2 < 6.6.156cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.12.108cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.18.49cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 7.1.13cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.2:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.2:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.2:rc5:*:*:*:*:*:*
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected 699023e239658e62da6f42f47d31b54788521ec1 < 09aa68552d2542cc6c23edd1568ac265dc5d886f ; affected 699023e239658e62da6f42f47d31b54788521ec1 < 429b6f43b4d8c98988fdca99e02dc156134e3d77 ; affected 699023e239658e62da6f42f47d31b54788521ec1 < d8636c8f9f95d0fd1e2f6f1cad0d5757aa6f212a ; affected 699023e239658e62da6f42f47d31b54788521ec1 < c0a9bd5fca0b5f2dea32b0fc31350e71e8648112 ; affected 699023e239658e62da6f42f47d31b54788521ec1 < ec8fcaf354c1cbb36755d48e9f5a00c9591349e5 ; affected 699023e239658e62da6f42f47d31b54788521ec1 < 0f38453cdb2e17566ccb7c0f3dabd5bd21caca26 |
| Linux · Linux | affected 4.2 ; unaffected 0 < 4.2 ; unaffected 6.1.187 ≤ 6.1.* ; unaffected 6.6.156 ≤ 6.6.* ; unaffected 6.12.108 ≤ 6.12.* ; unaffected 6.18.49 ≤ 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 |