CVE-2026-89840
Received
Received - Intake
BaseFortify
Vulnerability report for CVE-2026-89840, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-16
Last updated on: 2026-10-03
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
f2fs: validate MOVE_RANGE destination size
F2FS_IOC_MOVE_RANGE checks the source range, but not the destination end
before updating i_size. A source hole can expose this: __clone_blkaddrs()
skips NULL_ADDR entries and returns success, so the caller can still extend
the destination inode with unchecked pos_out + len.
Reject destination overflow and use inode_newsize_ok() before extending
the destination inode.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b |
| Linux | Linux | 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b |
| Linux | Linux | 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b |
| Linux | Linux | 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b |
| Linux | Linux | 4.8 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
