---
cve: "CVE-2026-52920"
severity: "HIGH"
cvss: 8.3
epss: "30%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-06-24 08:16:21"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T21:17:39+02:00"
---

# CVE-2026-52920

> 8.3 HIGH

## Beschreibung

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

netfilter: xt_policy: fix strict mode inbound policy matching

match_policy_in() walks sec_path entries from the last transform to the
first one, but strict policy matching needs to consume info->pol[] in
the same forward order as the rule layout.

Derive the strict-match policy position from the number of transforms
already consumed so that multi-element inbound rules are matched
consistently.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- Kernel ≥ 5.10.258
- Kernel ≥ 5.15.209
- Kernel ≥ 6.1.175
- Kernel ≥ 6.6.141
- Kernel ≥ 6.12.91
- Kernel ≥ 6.18.33
- Kernel ≥ 7.0.10

## Referenzen

- <https://git.kernel.org/stable/c/eb323f7b82d2e2f638de0cc2a177803eb20e0707>
- <https://git.kernel.org/stable/c/fc1c518bb1f054831ecabb32da9b8e1dff9699c6>
- <https://git.kernel.org/stable/c/f98b7f85e04b40e28b08c461ded0cc79f14f5509>
- <https://git.kernel.org/stable/c/82664d0f1ba25e4f9a71994954abae24c60f4067>
- <https://git.kernel.org/stable/c/b130a6eefa02bd4d475f2f059da8bcfb3e7d18d9>
- <https://git.kernel.org/stable/c/938867e870fb5471bb16f442aeac81326e05bf65>
- <https://git.kernel.org/stable/c/392cc1d8408b5665215c1e9290bbf0f92339b043>
- <https://git.kernel.org/stable/c/4b2b4d7d4e203c92db8966b163edfacb1f0e1e29>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-52920) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_