5.5

CVE-2024-44947: linux Improper Initialization

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2024-44947DEBIAN-CVE-2024-44947
Published 02-09-2024Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2024-44947 is a medium (CVSS 5.5) Improper Initialization vulnerability in linux. EPSS estimates a 0.89% chance of exploitation in the next 30 days, higher than 58.6% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.89%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 53 · Related 47
DLA-3912-1DLA-4008-1DSA-5782-1MGASA-2024-0309MGASA-2024-0310RHSA-2024:9315

Timeline

  1. 02-09-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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).

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.89%

Chance of exploitation in the next 30 days

Percentile

59%

Versus all other CVEs

30-day change

0.00 pp

From 0.89% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.89%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu129 products
  • linuxAll versions (No fix recorded) | < 4.4.0-262.296 | < 4.15.0-232.244 | < 5.4.0-200.220 | < 5.15.0-125.135 | < 6.8.0-50.51
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1139.145 | < 4.4.0-1177.192 | < 4.15.0-1176.189 | < 5.4.0-1135.145 | < 5.15.0-1072.78 | < 6.8.0-1020.22
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ a1d75f258230b75d46aecdf28b2e732413028863, < 49934861514d36d0995be8e81bb3312a499d8d9a | ≥ a1d75f258230b75d46aecdf28b2e732413028863, < 33168db352c7b56ae18aa55c2cae1a1c5905d30e | ≥ a1d75f258230b75d46aecdf28b2e732413028863, < 4690e2171f651e2b415e3941ce17f2f7b813aff6 | ≥ a1d75f258230b75d46aecdf28b2e732413028863, < 8c78303eafbf85a728dd84d1750e89240c677dd9 | ≥ a1d75f258230b75d46aecdf28b2e732413028863, < 831433527773e665bdb635ab5783d0b95d1246f4 | ≥ a1d75f258230b75d46aecdf28b2e732413028863, < ac42e0f0eb66af966015ee33fd355bc6f5d80cd6 | ≥ a1d75f258230b75d46aecdf28b2e732413028863, < 18a067240817bee8a9360539af5d79a4bf5398a5 | ≥ a1d75f258230b75d46aecdf28b2e732413028863, < 3c0da3d163eb32f1f91891efaade027fa9b245b9 | 2.6.36
  • linux_kernel≥ 2.6.36, < 4.19.321 | ≥ 4.20, < 5.4.283 | ≥ 5.5, < 5.10.225 | ≥ 5.11, < 5.15.166 | ≥ 5.16, < 6.1.107 | ≥ 6.2, < 6.6.48 | ≥ 6.7, < 6.10.7 | 6.11:rc1 | 6.11:rc2 | 6.11:rc3
Debian1 product
  • linux< 6.1.112-1 | < 6.10.7-1

3 vendors · 132 products

References

35 links
Show all 35 references