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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2024-44947 Detail

Description

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).


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/18a067240817bee8a9360539af5d79a4bf5398a5 Patch 
https://git.kernel.org/stable/c/33168db352c7b56ae18aa55c2cae1a1c5905d30e Patch 
https://git.kernel.org/stable/c/3c0da3d163eb32f1f91891efaade027fa9b245b9 Patch 
https://git.kernel.org/stable/c/4690e2171f651e2b415e3941ce17f2f7b813aff6 Patch 
https://git.kernel.org/stable/c/49934861514d36d0995be8e81bb3312a499d8d9a Patch 
https://git.kernel.org/stable/c/831433527773e665bdb635ab5783d0b95d1246f4 Patch 
https://git.kernel.org/stable/c/8c78303eafbf85a728dd84d1750e89240c677dd9 Patch 
https://git.kernel.org/stable/c/ac42e0f0eb66af966015ee33fd355bc6f5d80cd6 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-665 Improper Initialization cwe source acceptance level NIST  

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-44947
NVD Published Date:
09/02/2024
NVD Last Modified:
09/16/2024
Source:
kernel.org