---
cve: "CVE-2024-44947"
severity: "LOW"
cvss: 3.1
epss: "89%"
vendor: "Linux"
kev: false
exploited: false
published: "2024-09-02 18:15:36"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-15T23:15:00+02:00"
---

# CVE-2024-44947

> 3.1 LOW · 🧪 PoC

## Beschreibung

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

fuse: Initialize beyond-EOF page contents before setting uptodate

fuse_notify_store(), unlike fuse_do_readpage(), does not enable page
zeroing (because it can be used to change partial page contents).

So fuse_notify_store() must be more careful to fully initialize page
contents (including parts of the page that are beyond end-of-file)
before marking the page uptodate.

The current code can leave beyond-EOF page contents uninitialized, which
makes these uninitialized page contents visible to userspace via mmap().

This is an information leak, but only affects systems which do not
enable init-on-alloc (via CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y or the
corresponding kernel command line parameter).

## Patch verfügbar (OSV)

- Kernel ≥ 4.19.321
- Kernel ≥ 5.4.283
- Kernel ≥ 5.10.225
- Kernel ≥ 5.15.166
- Kernel ≥ 6.1.107
- Kernel ≥ 6.6.48
- Kernel ≥ 6.10.7

## Referenzen

- <https://git.kernel.org/stable/c/49934861514d36d0995be8e81bb3312a499d8d9a>
- <https://git.kernel.org/stable/c/33168db352c7b56ae18aa55c2cae1a1c5905d30e>
- <https://git.kernel.org/stable/c/4690e2171f651e2b415e3941ce17f2f7b813aff6>
- <https://git.kernel.org/stable/c/8c78303eafbf85a728dd84d1750e89240c677dd9>
- <https://git.kernel.org/stable/c/831433527773e665bdb635ab5783d0b95d1246f4>
- <https://git.kernel.org/stable/c/ac42e0f0eb66af966015ee33fd355bc6f5d80cd6>
- <https://git.kernel.org/stable/c/18a067240817bee8a9360539af5d79a4bf5398a5>
- <https://git.kernel.org/stable/c/3c0da3d163eb32f1f91891efaade027fa9b245b9>
- <https://project-zero.issues.chromium.org/issues/42451729>
- <https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html>
- <https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2024-44947) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_