CVE-2024-44947fuse: Initialize beyond-EOF page contents before setting uptodate
- 5.5MediumCVSS base score
- 0.89%Exploitation in 30 daysEPSS · top 40% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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).
Timeline
ID reserved
By Linux
- 12 days later
· 12 days later
Published
- 21 months later
· 21 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.89% · top 40% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected a1d75f258230b75d46aecdf28b2e732413028863 – < 49934861514d36d0995be8e81bb3312a499d8d9a
- affected a1d75f258230b75d46aecdf28b2e732413028863 – < 33168db352c7b56ae18aa55c2cae1a1c5905d30e
- affected a1d75f258230b75d46aecdf28b2e732413028863 – < 4690e2171f651e2b415e3941ce17f2f7b813aff6
- affected a1d75f258230b75d46aecdf28b2e732413028863 – < 8c78303eafbf85a728dd84d1750e89240c677dd9
- affected a1d75f258230b75d46aecdf28b2e732413028863 – < 831433527773e665bdb635ab5783d0b95d1246f4
- affected a1d75f258230b75d46aecdf28b2e732413028863 – < ac42e0f0eb66af966015ee33fd355bc6f5d80cd6
- affected a1d75f258230b75d46aecdf28b2e732413028863 – < 18a067240817bee8a9360539af5d79a4bf5398a5
- affected a1d75f258230b75d46aecdf28b2e732413028863 – < 3c0da3d163eb32f1f91891efaade027fa9b245b9
- affected 2.6.36
- unaffected < 2.6.36
- unaffected 4.19.321 – ≤ 4.19.*
- unaffected 5.4.283 – ≤ 5.4.*
- unaffected 5.10.225 – ≤ 5.10.*
- unaffected 5.15.166 – ≤ 5.15.*
- unaffected 6.1.107 – ≤ 6.1.*
- unaffected 6.6.48 – ≤ 6.6.*
- unaffected 6.10.7 – ≤ 6.10.*
- unaffected 6.11 – ≤ *
References
References11
- https://git.kernel.org/stable/c/49934861514d36d0995be8e81bb3312a499d8d9a (opens in a new tab)
- https://git.kernel.org/stable/c/33168db352c7b56ae18aa55c2cae1a1c5905d30e (opens in a new tab)
- https://git.kernel.org/stable/c/4690e2171f651e2b415e3941ce17f2f7b813aff6 (opens in a new tab)
- https://git.kernel.org/stable/c/8c78303eafbf85a728dd84d1750e89240c677dd9 (opens in a new tab)
- https://git.kernel.org/stable/c/831433527773e665bdb635ab5783d0b95d1246f4 (opens in a new tab)
- https://git.kernel.org/stable/c/ac42e0f0eb66af966015ee33fd355bc6f5d80cd6 (opens in a new tab)
- https://git.kernel.org/stable/c/18a067240817bee8a9360539af5d79a4bf5398a5 (opens in a new tab)
- https://git.kernel.org/stable/c/3c0da3d163eb32f1f91891efaade027fa9b245b9 (opens in a new tab)
- https://project-zero.issues.chromium.org/issues/42451729 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-41247 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-44947)Record last updated .