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

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel
Redhat
  • Enterprise Linux

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*
Package CPE Advisory Released Date
Red Hat Enterprise Linux 9
kernel-0:5.14.0-503.11.1.el9_5 cpe:/a:redhat:enterprise_linux:9 RHSA-2024:9315 2024-11-12T00:00:00Z
kernel-0:5.14.0-503.11.1.el9_5 cpe:/o:redhat:enterprise_linux:9 RHSA-2024:9315 2024-11-12T00:00:00Z
References
Link Providers
https://git.kernel.org/stable/c/18a067240817bee8a9360539af5d79a4bf5398a5 cve-icon cve-icon
https://git.kernel.org/stable/c/33168db352c7b56ae18aa55c2cae1a1c5905d30e cve-icon cve-icon
https://git.kernel.org/stable/c/3c0da3d163eb32f1f91891efaade027fa9b245b9 cve-icon cve-icon
https://git.kernel.org/stable/c/4690e2171f651e2b415e3941ce17f2f7b813aff6 cve-icon cve-icon
https://git.kernel.org/stable/c/49934861514d36d0995be8e81bb3312a499d8d9a cve-icon cve-icon
https://git.kernel.org/stable/c/831433527773e665bdb635ab5783d0b95d1246f4 cve-icon cve-icon
https://git.kernel.org/stable/c/8c78303eafbf85a728dd84d1750e89240c677dd9 cve-icon cve-icon
https://git.kernel.org/stable/c/ac42e0f0eb66af966015ee33fd355bc6f5d80cd6 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2024090219-CVE-2024-44947-f49c@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2024-44947 cve-icon
https://project-zero.issues.chromium.org/issues/42451729 cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2024-44947 cve-icon
History

Sat, 23 Nov 2024 22:45:00 +0000

Type Values Removed Values Added
References

Wed, 13 Nov 2024 02:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat enterprise Linux
CPEs cpe:/a:redhat:enterprise_linux:9
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux

Wed, 16 Oct 2024 02:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-402
Metrics threat_severity

Moderate

 threat_severity

Low

Mon, 16 Sep 2024 18:15:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-665
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

Wed, 11 Sep 2024 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 04 Sep 2024 12:15:00 +0000

Type Values Removed Values Added
References

Tue, 03 Sep 2024 09:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Mon, 02 Sep 2024 17:45:00 +0000

Type Values Removed Values 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).
Title fuse: Initialize beyond-EOF page contents before setting uptodate
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-09-02T17:36:15.633Z

Updated: 2024-11-23T22:42:41.319Z

Reserved: 2024-08-21T05:34:56.665Z

Link: CVE-2024-44947

cve-icon Vulnrichment

Updated: 2024-09-11T12:42:19.078Z

cve-icon NVD

Status : Modified

Published: 2024-09-02T18:15:36.577

Modified: 2024-11-23T23:15:03.810

Link: CVE-2024-44947

cve-icon Redhat

Severity : Low

Publid Date: 2024-09-02T00:00:00Z

Links: CVE-2024-44947 - Bugzilla