---
cve: "CVE-2026-45959"
severity: "HIGH"
cvss: 7.8
epss: "13%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-05-27 14:17:12"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T12:02:06+02:00"
---

# CVE-2026-45959

> 7.8 HIGH

## Beschreibung

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

crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree

Annotating a local pointer variable, which will be assigned with the
kmalloc-family functions, with the `__cleanup(kfree)` attribute will
make the address of the local variable, rather than the address returned
by kmalloc, passed to kfree directly and lead to a crash due to invalid
deallocation of stack address. According to other places in the repo,
the correct usage should be `__free(kfree)`. The code coincidentally
compiled because the parameter type `void *` of kfree is compatible with
the desired type `struct { ... } **`.

## 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 ≥ 6.18.14
- Kernel ≥ 6.19.4

## Referenzen

- <https://git.kernel.org/stable/c/9a3ace9b010ffd8c422c97844ae152f7c53d6b18>
- <https://git.kernel.org/stable/c/90f9090e3e744a8fe3bb6fa0e61f577347728b0b>
- <https://git.kernel.org/stable/c/d5abcc33ee76bc26d58b39dc1a097e43a99dd438>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-45959) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_