---
cve: "CVE-2021-47478"
severity: "CRITICAL"
cvss: 9.1
epss: "0.7%"
vendor: "Linux"
kev: false
exploited: false
published: "2024-05-22 09:15:09"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T18:47:39+02:00"
---

# CVE-2021-47478

> 9.1 CRITICAL

## Beschreibung

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

isofs: Fix out of bound access for corrupted isofs image

When isofs image is suitably corrupted isofs_read_inode() can read data
beyond the end of buffer. Sanity-check the directory entry length before
using it.

## CVSS-Vektor

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

## Referenzen

- <https://git.kernel.org/stable/c/156ce5bb6cc43a80a743810199defb1dc3f55b7f>
- <https://git.kernel.org/stable/c/9ec33a9b8790c212cc926a88c5e2105f97f3f57e>
- <https://git.kernel.org/stable/c/afbd40f425227e661d991757e11cc4db024e761f>
- <https://git.kernel.org/stable/c/b0ddff8d68f2e43857a84dce54c3deab181c8ae1>
- <https://git.kernel.org/stable/c/6e80e9314f8bb52d9eabe1907698718ff01120f5>
- <https://git.kernel.org/stable/c/86d4aedcbc69c0f84551fb70f953c24e396de2d7>
- <https://git.kernel.org/stable/c/b2fa1f52d22c5455217b294629346ad23a744945>
- <https://git.kernel.org/stable/c/e7fb722586a2936b37bdff096c095c30ca06404d>
- <https://git.kernel.org/stable/c/e96a1866b40570b5950cda8602c2819189c62a48>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-47478) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_