---
cve: "CVE-2026-53264"
severity: "HIGH"
cvss: 7.8
epss: "21%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-06-25 09:16:44"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T12:13:07+02:00"
---

# CVE-2026-53264

> 7.8 HIGH

## Beschreibung

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

net/sched: act_api: use RCU with deferred freeing for action lifecycle

When NEWTFILTER and DELFILTER are run concurrently it is possible to create a
race with an associated action.

Let's illustrate with CPU0 running NEWTFILTER and CPU1 running DELFILTER:

 0: mutex_lock()

## 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 |

## Patch verfügbar (OSV)

- Kernel ≥ 5.10.259
- Kernel ≥ 5.15.210
- Kernel ≥ 6.1.176
- Kernel ≥ 6.6.143
- Kernel ≥ 6.12.94
- Kernel ≥ 6.18.36
- Kernel ≥ 7.0.13

## Referenzen

- <https://git.kernel.org/stable/c/98b2e40879abf0245be5a5b7af69e0f6ff524ac3>
- <https://git.kernel.org/stable/c/18af5d2ef0c4f65787fd1280c8b23286b9f2a835>
- <https://git.kernel.org/stable/c/1f1b98fea6b9ea30507d0f2fbff6750292d097e2>
- <https://git.kernel.org/stable/c/8b136f18ac4b2ace5aaad3305b3f8a5d8165a009>
- <https://git.kernel.org/stable/c/5dd51e09020c65aa53cf128e5e3517cd53b3c113>
- <https://git.kernel.org/stable/c/b60e9391142e983fab2be53497aa8f71fdd09cd5>
- <https://git.kernel.org/stable/c/91d105d2cbe002f9c7b43a6183adedc37e1da1f7>
- <https://git.kernel.org/stable/c/5057e1aca011e51ef51498c940ef96f3d3e8a305>
- <https://starlabs.sg/blog/2026/07-when-ai-makes-0-days-feel-like-n-days/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-53264) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_