---
cve: "CVE-2026-53148"
severity: "HIGH"
cvss: 7.0
epss: "14%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-06-25 09:16:32"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-09T11:04:12+02:00"
---

# CVE-2026-53148

> 7.0 HIGH

## Beschreibung

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

thunderbolt: Clamp XDomain response data copy to allocation size

tb_xdp_properties_request() derives the per-packet copy length from
the response header without checking that it fits in the previously
allocated data buffer.  A malicious peer can set its length field
larger than the declared data_length, causing memcpy to write past
the kcalloc allocation.

Clamp the per-packet copy length so that the cumulative offset
never exceeds data_len.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Hoch | good |
| 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/0b334279a82d79fb4723bd4f614305de1ab69caa>
- <https://git.kernel.org/stable/c/6021d39ccd979713b39b980286020d8f9a45efd1>
- <https://git.kernel.org/stable/c/89ae04365e01d5ae4aae83044a8bbd2a9aaf8d0d>
- <https://git.kernel.org/stable/c/5db10c8ad8c09f72c847dfeef3d876098257f505>
- <https://git.kernel.org/stable/c/05a43157676c243c248d1c6d9dcecbe6eba2f35d>
- <https://git.kernel.org/stable/c/fcbd0cdab92838854a5818be7ed8a097164ef6d5>
- <https://git.kernel.org/stable/c/906035d5c3784570191d259cbf9a0ac1617852b5>
- <https://git.kernel.org/stable/c/322e93448d908434ae5545660fcbe8f5a7a8e141>
- <https://access.redhat.com/security/cve/CVE-2026-53148>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2492756>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53148.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-53148) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_