CVE-2026-129490
littlefs through 2.11.3 Type Confusion in lfs_dir_traverse via lfs_migrate
- Medium 6.8
- A public exploit reference is listed
Description
littlefs through 2.11.3, when built with LFS_MIGRATE, contains a type confusion vulnerability in lfs_dir_traverse() that treats a stack lfs_diskoff struct as an lfs_attr array. Attackers can supply a crafted littlefs v1 image whose metadata is read as LFS_FROM_USERATTRS during migration, causing out-of-bounds stack reads and process crashes.
Key facts
- Published
- 15 Nov 2026
- Last changed
- 15 Nov 2026
- Assigned by
- VulnCheck
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 6.8CVSS 4.0, Mediumfrom the CNA (VulnCheck)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - 5.5CVSS 3.1, Mediumfrom the CNA (VulnCheck)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| littlefs-project | littlefs |
|
Timeline
- 15 Nov 2026 Published