---
cve: "CVE-2026-89992"
severity: "HIGH"
cvss: 8.4
epss: "22.7%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-09-16 11:17:10"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T05:40:58+02:00"
---

# CVE-2026-89992

> 8.4 HIGH

## Beschreibung

In the Linux kernel, the following vulnerability has been resolved:

cpuidle: dt_idle_genpd: kfree() the original name allocation

dt_idle_pd_alloc() kasprintf()s the full node path, then points
pd->name at kbasename() of that string. dt_idle_pd_free() kfree()s
pd->name, which is no longer the start of the allocation.

Copy the basename instead.

## CVSS-Vektor

```
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- Kernel ≥ 6.1.188
- Kernel ≥ 6.6.157
- Kernel ≥ 6.12.110
- Kernel ≥ 6.18.51
- Kernel ≥ 7.2.5

## Referenzen

- <https://git.kernel.org/stable/c/1312ae33b91430ec99e69cd3d47f0e50a4ebf54b>
- <https://git.kernel.org/stable/c/a38caa9ed0d5c61c17d88393b14b292199289c1f>
- <https://git.kernel.org/stable/c/09d002c8fb0261d35ce9d8a705de5db034ee90b8>
- <https://git.kernel.org/stable/c/b519dfce1998c323e54a56f911cf708d9ba0e076>
- <https://git.kernel.org/stable/c/3394c7ba23336bdb7ece29127130fd01731d42d8>
- <https://git.kernel.org/stable/c/2b0ac85512b7f67479127b2713254490662eb13d>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-89992) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_