---
cve: "CVE-2026-43030"
severity: "HIGH"
cvss: 7.8
epss: "14%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-05-01 15:16:47"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T11:56:56+02:00"
---

# CVE-2026-43030

> 7.8 HIGH

## Beschreibung

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

bpf: Fix regsafe() for pointers to packet

In case rold->reg->range == BEYOND_PKT_END && rcur->reg->range == N
regsafe() may return true which may lead to current state with
valid packet range not being explored. Fix the bug.

## 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 ≥ 5.10.253
- Kernel ≥ 5.15.203
- Kernel ≥ 6.6.134
- Kernel ≥ 6.12.81
- Kernel ≥ 6.18.22
- Kernel ≥ 6.19.12

## Referenzen

- <https://git.kernel.org/stable/c/b52f6d0ef7b308f9d05bbddb78749852f28e8e40>
- <https://git.kernel.org/stable/c/37db6b9726d0bcf91cbdf9d63b558c50da49f968>
- <https://git.kernel.org/stable/c/015a74476dc1ab6923d89f1ee009aaf43faa7185>
- <https://git.kernel.org/stable/c/b99d82706bd1511bb875e3de7154698fd9215c99>
- <https://git.kernel.org/stable/c/7241da033fdc507b920e092dab1f97b945cb0370>
- <https://git.kernel.org/stable/c/8aebe18069394f4a79d2d82080a0f806da449996>
- <https://git.kernel.org/stable/c/ca995b1462ec6db1e869100ba1fb7356bd3f22f0>
- <https://git.kernel.org/stable/c/a8502a79e832b861e99218cbd2d8f4312d62e225>
- <https://cert-portal.siemens.com/productcert/html/ssa-019113.html>
- <https://cert-portal.siemens.com/productcert/html/ssa-082556.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-43030) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_