---
cve: "CVE-2026-23364"
severity: "HIGH"
cvss: 7.4
epss: "39%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-03-25 11:16:35"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T10:07:01+02:00"
---

# CVE-2026-23364

> 7.4 HIGH

## Beschreibung

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

ksmbd: Compare MACs in constant time

To prevent timing attacks, MAC comparisons need to be constant-time.
Replace the memcmp() with the correct function, crypto_memneq().

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- Kernel ≥ 5.15.210
- Kernel ≥ 6.1.167
- Kernel ≥ 6.6.130
- Kernel ≥ 6.12.78
- Kernel ≥ 6.18.19
- Kernel ≥ 6.19.7

## Referenzen

- <https://git.kernel.org/stable/c/8a665d733940592e671ec6afadcd0be80a091a80>
- <https://git.kernel.org/stable/c/cd52a0e309659537048a864211abc3ea4c5caa63>
- <https://git.kernel.org/stable/c/307afccb751f542246bd5dc68a2c1ffe1a78418c>
- <https://git.kernel.org/stable/c/2cdc56ed67615ba0921383a688f24415ebe065f3>
- <https://git.kernel.org/stable/c/93c0a22fec914ec4b697e464895a0f594e29fb28>
- <https://git.kernel.org/stable/c/f4588b85efd6007d46b80aa1b9fb746628ffb3dc>
- <https://git.kernel.org/stable/c/c5794709bc9105935dbedef8b9cf9c06f2b559fa>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-23364) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_