---
cve: "CVE-2026-74603"
severity: "HIGH"
cvss: 7.1
epss: "20.3%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-08-22 16:16:32"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T00:49:26+02:00"
---

# CVE-2026-74603

> 7.1 HIGH

## Beschreibung

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

ptp: ocp: Fix board ID over-read

The EEPROM board ID is a fixed 13-byte field and is not guaranteed to
contain a NUL terminator. Passing it directly to
devlink_info_version_fixed_put() treats it as a C string and may read
beyond the field.

Format at most OCP_BOARD_ID_LEN bytes into the existing local buffer
before reporting the ID. Use a precision limit because the snprintf()
output size alone does not bound the source string scan.

## CVSS-Vektor

```
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- Kernel ≥ 6.1.183
- Kernel ≥ 6.6.152
- Kernel ≥ 6.12.104
- Kernel ≥ 6.18.45
- Kernel ≥ 7.1.9

## Referenzen

- <https://git.kernel.org/stable/c/3d965811be78473654e6e8cc8e4fb7b6b87aa6c1>
- <https://git.kernel.org/stable/c/5fd91dd4a143479b0575fb1f202ec1c501e71fd5>
- <https://git.kernel.org/stable/c/6b69f2ef10cdb018c0b127a7cab88e590bbddba4>
- <https://git.kernel.org/stable/c/72ef3ce80078199bfad32f98d055f44ba7cd0c3d>
- <https://git.kernel.org/stable/c/f8d7e5751267637190eff887c971d5b468106213>
- <https://git.kernel.org/stable/c/f92558bbe78d6284fedd053900f82a70f0aa8707>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-74603) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_