CVE-2024-44947

CVE Details

Release Date:

2024-09-02

Description

In the Linux kernel, the following vulnerability has been resolved:\nfuse: Initialize beyond-EOF page contents before setting uptodate\nfuse_notify_store(), unlike fuse_do_readpage(), does not enable page\nzeroing (because it can be used to change partial page contents).\nSo fuse_notify_store() must be more careful to fully initialize page\ncontents (including parts of the page that are beyond end-of-file)\nbefore marking the page uptodate.\nThe current code can leave beyond-EOF page contents uninitialized, which\nmakes these uninitialized page contents visible to userspace via mmap().\nThis is an information leak, but only affects systems which do not\nenable init-on-alloc (via CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y or the\ncorresponding kernel command line parameter).

See more information about CVE-2024-44947 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	5.5
Vector String:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality:	High
Integrity:	None
Availability:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12813	2024-11-12
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12868	2024-12-06
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12813	2024-11-12
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12815	2024-11-11
Oracle Linux version 9 (kernel)	ELSA-2024-9315	2024-11-14
Oracle Linux version 9 (kernel-uek)	ELSA-2024-12815	2024-11-11