---
cve: "CVE-2026-74523"
severity: "HIGH"
cvss: 7.5
epss: "50%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-08-15 13:17:57"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T04:02:25+02:00"
---

# CVE-2026-74523

> 7.5 HIGH

## Beschreibung

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

qede: sync udp_tunnel ports outside qede_lock in the recovery path

A TX timeout on a qede NIC that has VXLAN/GENEVE tunnel ports
configured wedges the rtnetlink control plane of the whole machine:

  NETDEV WATCHDOG: ens6f1 (qede): transmit queue 2 timed out 10226 ms
  [qede_tx_timeout:586(ens6f1)]TX timeout on queue 2!
  [qede_recovery_handler:2665(ens6f0)]Starting a recovery process

The recovery path deadlocks on the driver's own mutex:

  qede_sp_task
   rtnl_lock()
   mutex_lock(&edev->qede_lock)        sync_table == qede_udp_tunnel_sync
       mutex_lock(&edev->qede_lock)

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- Kernel ≥ 5.10.265
- Kernel ≥ 5.15.216
- Kernel ≥ 6.1.183
- Kernel ≥ 6.6.151
- Kernel ≥ 6.12.103
- Kernel ≥ 6.18.44
- Kernel ≥ 7.1.8

## Referenzen

- <https://git.kernel.org/stable/c/19e505ee8bb9e0f0355eda9e9f614fb25fed0070>
- <https://git.kernel.org/stable/c/c4c1e5d6bc2b900b2328d6fff93dc8146b858d69>
- <https://git.kernel.org/stable/c/8e1bdf57de91247e57816482966265ada573cc74>
- <https://git.kernel.org/stable/c/e382a4efeeae6555b95d9ff336cf3094ee7d336b>
- <https://git.kernel.org/stable/c/4626df3f63c9185efba5750fe76ac01ab3351bae>
- <https://git.kernel.org/stable/c/e51becb8f3377a377171ed5bf0082b96e22e6292>
- <https://git.kernel.org/stable/c/6f1ef8170d3d8ad9319aa01347945dcdf5cc4f27>
- <https://git.kernel.org/stable/c/451c9075d6c53f2438d110addbeeeea6fac18567>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-74523) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_