---
cve: "CVE-2024-27431"
severity: "HIGH"
cvss: 7.8
epss: "23%"
vendor: "Linux"
kev: false
exploited: false
published: "2024-05-17 12:15:16"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T05:33:09+02:00"
---

# CVE-2024-27431

> 7.8 HIGH

## Beschreibung

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

cpumap: Zero-initialise xdp_rxq_info struct before running XDP program

When running an XDP program that is attached to a cpumap entry, we don't
initialise the xdp_rxq_info data structure being used in the xdp_buff
that backs the XDP program invocation. Tobias noticed that this leads to
random values being returned as the xdp_md->rx_queue_index value for XDP
programs running in a cpumap.

This means we're basically returning the contents of the uninitialised
memory, which is bad. Fix this by zero-initialising the rxq data
structure before running the XDP program.

## 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 ≥ 5.10.213
- Kernel ≥ 5.15.152
- Kernel ≥ 6.1.82
- Kernel ≥ 6.6.22
- Kernel ≥ 6.7.10

## Referenzen

- <https://git.kernel.org/stable/c/5f4e51abfbe6eb444fa91906a5cd083044278297>
- <https://git.kernel.org/stable/c/f0363af9619c77730764f10360e36c6445c12f7b>
- <https://git.kernel.org/stable/c/3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95>
- <https://git.kernel.org/stable/c/f562e4c4aab00986dde3093c4be919c3f2b85a4a>
- <https://git.kernel.org/stable/c/eaa7cb836659ced2d9f814ac32aa3ec193803ed6>
- <https://git.kernel.org/stable/c/2487007aa3b9fafbd2cb14068f49791ce1d7ede5>
- <https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html>
- <https://cert-portal.siemens.com/productcert/html/ssa-265688.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2024-27431) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_