platform/x86: ISST: Validate level in perf mask ioctls (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.16 % · percentile 6 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: platform/x86: ISST: Validate level in perf mask ioctls isst_if_get_perf_level_mask() and isst_if_get_base_freq_mask() use the user-provided level as an index into perf_levels[] via _read_pp_level_info() and _read_bf_level_info(), but neither helper validates it first. The adjacent level-info helpers reject levels above max_level before reading the same per-level register block. Add the same bounds checks to the mask helpers, and reject disabled SST-PP levels in isst_if_get_perf_level_mask() to match isst_if_get_perf_level_info(). This prevents out-of-bounds reads from the per-level offset table on invalid ioctl input.
References
- https://git.kernel.org/stable/c/beb22ebf76c0415f22d2d0c3f1ff0627e7ae4a68
- https://git.kernel.org/stable/c/1a8bab5ceee1a42a78de12d3d69f67516a20588e
- https://git.kernel.org/stable/c/1889a9156553f0692acd57caf15e877baace1a01
- https://git.kernel.org/stable/c/d19385624bdfb577db9c94bb8879992fd5e17bcd
- https://git.kernel.org/stable/c/80e0d353c86a9a168ad6d213f494796294381538
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| 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) |
European references
- ENISA EUVD · EUVD-2026-76349
- GCVE · GCVE-0-2026-89443
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected ea009e4769fa3bd05d4c111c3b6865eb3a9be829 < beb22ebf76c0415f22d2d0c3f1ff0627e7ae4a68 ; affected ea009e4769fa3bd05d4c111c3b6865eb3a9be829 < 1a8bab5ceee1a42a78de12d3d69f67516a20588e ; affected ea009e4769fa3bd05d4c111c3b6865eb3a9be829 < 1889a9156553f0692acd57caf15e877baace1a01 ; affected ea009e4769fa3bd05d4c111c3b6865eb3a9be829 < d19385624bdfb577db9c94bb8879992fd5e17bcd ; affected ea009e4769fa3bd05d4c111c3b6865eb3a9be829 < 80e0d353c86a9a168ad6d213f494796294381538 |
| Linux · Linux | affected 6.4 ; unaffected 0 < 6.4 ; unaffected 6.6.157 ≤ 6.6.* ; unaffected 6.12.109 ≤ 6.12.* ; unaffected 6.18.50 ≤ 6.18.* ; unaffected 7.2.4 ≤ 7.2.* |
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 |