---
cve: "CVE-2023-53674"
severity: "HIGH"
cvss: 7.8
epss: "0.2%"
vendor: "Linux"
kev: false
exploited: false
published: "2025-10-07 15:21:30"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-11-09T05:40:31+01:00"
---

# CVE-2023-53674

> 7.8 HIGH

## Beschreibung

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

clk: Fix memory leak in devm_clk_notifier_register()

devm_clk_notifier_register() allocates a devres resource for clk
notifier but didn't register that to the device, so the notifier didn't
get unregistered on device detach and the allocated resource was leaked.

Fix the issue by registering the resource through devres_add().

This issue was found with kmemleak on a Chromebook.

## CNA-Record (Kanon, cvelistV5)

- CNA: **Linux**
- State: PUBLISHED
- Stand: 2026-08-05 09:15:27
- CNA-CVSS: **7.8** (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)

## CVSS-Vektor

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

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

## Schwachstellen-Klasse

- **CWE-401** — Missing Release of Memory after Effective Lifetime
  The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

## Patch verfügbar (OSV)

- Kernel ≥ 5.15.121
- Kernel ≥ 6.1.39
- Kernel ≥ 6.3.13
- Kernel ≥ 6.4.4

## BSI-Hinweise (deutsch)

- [Linux Kernel: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2025-2229) — _BSI-Einstufung: hoch_
  Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen und andere nicht näher spezifizierte Angriffe durchzuführen.

## Referenzen

- <https://git.kernel.org/stable/c/a326cf0107b197e649bbaa2a2b1355894826ce32>
- <https://git.kernel.org/stable/c/49451db71b746df990888068961f1033f7c9b734>
- <https://git.kernel.org/stable/c/cb1b04fd4283fc8f9acefe0ddc61ba072ed44877>
- <https://git.kernel.org/stable/c/efbbda79b2881a04dcd0e8f28634933d79e17e49>
- <https://git.kernel.org/stable/c/7fb933e56f77a57ef7cfc59fc34cbbf1b1fa31ff>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2023-53674/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_