CVE - CVE-2024-44947

CVE-ID
CVE-2024-44947	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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).
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/18a067240817bee8a9360539af5d79a4bf5398a5 URL:https://git.kernel.org/stable/c/18a067240817bee8a9360539af5d79a4bf5398a5 MISC:https://git.kernel.org/stable/c/33168db352c7b56ae18aa55c2cae1a1c5905d30e URL:https://git.kernel.org/stable/c/33168db352c7b56ae18aa55c2cae1a1c5905d30e MISC:https://git.kernel.org/stable/c/3c0da3d163eb32f1f91891efaade027fa9b245b9 URL:https://git.kernel.org/stable/c/3c0da3d163eb32f1f91891efaade027fa9b245b9 MISC:https://git.kernel.org/stable/c/4690e2171f651e2b415e3941ce17f2f7b813aff6 URL:https://git.kernel.org/stable/c/4690e2171f651e2b415e3941ce17f2f7b813aff6 MISC:https://git.kernel.org/stable/c/49934861514d36d0995be8e81bb3312a499d8d9a URL:https://git.kernel.org/stable/c/49934861514d36d0995be8e81bb3312a499d8d9a MISC:https://git.kernel.org/stable/c/831433527773e665bdb635ab5783d0b95d1246f4 URL:https://git.kernel.org/stable/c/831433527773e665bdb635ab5783d0b95d1246f4 MISC:https://git.kernel.org/stable/c/8c78303eafbf85a728dd84d1750e89240c677dd9 URL:https://git.kernel.org/stable/c/8c78303eafbf85a728dd84d1750e89240c677dd9 MISC:https://git.kernel.org/stable/c/ac42e0f0eb66af966015ee33fd355bc6f5d80cd6 URL:https://git.kernel.org/stable/c/ac42e0f0eb66af966015ee33fd355bc6f5d80cd6
Assigning CNA
kernel.org
Date Record Created
20240821	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240821)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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