KVM: x86: use array_index_nospec with indices that come from guest (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.18 % · percentile 8 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: use array_index_nospec with indices that come from guest min and dest_id are guest-controlled indices. Using array_index_nospec() after the bounds checks clamps these values to mitigate speculative execution side-channels.
Weaknesses (CWE)
- CWE-129 — Improper Validation of Array Index
References
- https://git.kernel.org/stable/c/72777fc31aa7ab2ce00f44bfa3929c6eabbeaf48
- https://git.kernel.org/stable/c/31a0ad2f60cb4816e06218b63e695eb72ce74974
- https://git.kernel.org/stable/c/d51e381beed5e2f50f85f49f6c90e023754efa12
- https://git.kernel.org/stable/c/33e974c2d5a82b2f9d9ba0ad9cbaabc1c8e3985f
- https://git.kernel.org/stable/c/f49161646e03d107ce81a99c6ca5da682fe5fb69
- https://git.kernel.org/stable/c/67a05679621b7f721bdba37a5d18665d3aceb695
- https://git.kernel.org/stable/c/f57a4bd8d6cb5af05b8ac1be9098e249034639fb
- https://git.kernel.org/stable/c/c87bd4dd43a624109c3cc42d843138378a7f4548
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
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-2025-29591
- GCVE · GCVE-0-2025-39823
CERT-FR advisories
- CERTFR-2026-AVI-0602 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0565 — Multiples vulnérabilités dans les produits Siemens · 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-2025-AVI-1135 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-1075 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-1073 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0921 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0895 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0894 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0825 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.19 < 5.4.298cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.242cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.191cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 6.1.150cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.2 < 6.6.104cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.12.45cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.16.5cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 4180bf1b655a791a0a6ef93a2ffffc762722c782 < 72777fc31aa7ab2ce00f44bfa3929c6eabbeaf48 ; affected 4180bf1b655a791a0a6ef93a2ffffc762722c782 < 31a0ad2f60cb4816e06218b63e695eb72ce74974 ; affected 4180bf1b655a791a0a6ef93a2ffffc762722c782 < d51e381beed5e2f50f85f49f6c90e023754efa12 ; affected 4180bf1b655a791a0a6ef93a2ffffc762722c782 < 33e974c2d5a82b2f9d9ba0ad9cbaabc1c8e3985f ; affected 4180bf1b655a791a0a6ef93a2ffffc762722c782 < f49161646e03d107ce81a99c6ca5da682fe5fb69 ; affected 4180bf1b655a791a0a6ef93a2ffffc762722c782 < 67a05679621b7f721bdba37a5d18665d3aceb695 |
| Linux · Linux | affected 4.19 ; unaffected 0 < 4.19 ; unaffected 5.4.298 ≤ 5.4.* ; unaffected 5.10.242 ≤ 5.10.* ; unaffected 5.15.191 ≤ 5.15.* ; unaffected 6.1.150 ≤ 6.1.* |
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 |