CVE-2024-44947
FUSE Linux Kernel Uninitialized Information Leak
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).
INFO
Published Date :
Sept. 2, 2024, 6:15 p.m.
Last Modified :
Sept. 16, 2024, 5:52 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2024-44947 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-44947.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
C
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-44947 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-44947 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Reanalysis by [email protected]
Sep. 16, 2024
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.36 up to (excluding) 4.19.321 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.283 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.255 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.166 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.107 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.48 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.10.7 *cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.36 up to (excluding) 4.19.321 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.283 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.225 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.166 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.107 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.48 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.10.7 *cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:* -
Initial Analysis by [email protected]
Sep. 16, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://git.kernel.org/stable/c/18a067240817bee8a9360539af5d79a4bf5398a5 No Types Assigned https://git.kernel.org/stable/c/18a067240817bee8a9360539af5d79a4bf5398a5 Patch Changed Reference Type https://git.kernel.org/stable/c/33168db352c7b56ae18aa55c2cae1a1c5905d30e No Types Assigned https://git.kernel.org/stable/c/33168db352c7b56ae18aa55c2cae1a1c5905d30e Patch Changed Reference Type https://git.kernel.org/stable/c/3c0da3d163eb32f1f91891efaade027fa9b245b9 No Types Assigned https://git.kernel.org/stable/c/3c0da3d163eb32f1f91891efaade027fa9b245b9 Patch Changed Reference Type https://git.kernel.org/stable/c/4690e2171f651e2b415e3941ce17f2f7b813aff6 No Types Assigned https://git.kernel.org/stable/c/4690e2171f651e2b415e3941ce17f2f7b813aff6 Patch Changed Reference Type https://git.kernel.org/stable/c/49934861514d36d0995be8e81bb3312a499d8d9a No Types Assigned https://git.kernel.org/stable/c/49934861514d36d0995be8e81bb3312a499d8d9a Patch Changed Reference Type https://git.kernel.org/stable/c/831433527773e665bdb635ab5783d0b95d1246f4 No Types Assigned https://git.kernel.org/stable/c/831433527773e665bdb635ab5783d0b95d1246f4 Patch Changed Reference Type https://git.kernel.org/stable/c/8c78303eafbf85a728dd84d1750e89240c677dd9 No Types Assigned https://git.kernel.org/stable/c/8c78303eafbf85a728dd84d1750e89240c677dd9 Patch Changed Reference Type https://git.kernel.org/stable/c/ac42e0f0eb66af966015ee33fd355bc6f5d80cd6 No Types Assigned https://git.kernel.org/stable/c/ac42e0f0eb66af966015ee33fd355bc6f5d80cd6 Patch Added CWE NIST CWE-665 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.36 up to (excluding) 4.19.321 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.283 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.255 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.166 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.107 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.48 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.10.7 *cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:* -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 04, 2024
Action Type Old Value New Value Added Reference kernel.org https://git.kernel.org/stable/c/49934861514d36d0995be8e81bb3312a499d8d9a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/33168db352c7b56ae18aa55c2cae1a1c5905d30e [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/4690e2171f651e2b415e3941ce17f2f7b813aff6 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8c78303eafbf85a728dd84d1750e89240c677dd9 [No types assigned] -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 02, 2024
Action Type Old Value New Value Added 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). Added Reference kernel.org https://git.kernel.org/stable/c/831433527773e665bdb635ab5783d0b95d1246f4 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ac42e0f0eb66af966015ee33fd355bc6f5d80cd6 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/18a067240817bee8a9360539af5d79a4bf5398a5 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/3c0da3d163eb32f1f91891efaade027fa9b245b9 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-44947 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-44947
weaknesses.