CVE-2026-89840
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
39/100
Published: 2026-09-16
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Low Complexity
No Interaction
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
High
A:
High
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.
Affected Software (7)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b < 454de20a5a36c000b75f49337aae8c92045c5242 |
| Linux | Linux | 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b < 54c587f3f95ce2d6932a16566db83f73cc4313e1 |
| Linux | Linux | 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b < bca61ee5192ea47003722486ae9588a2a4bb47b6 |
| Linux | Linux | 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b < db13064669526494cd78ba3a4394063b740e940c |
| Linux | Linux | 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b < dcae1eeda53149f219dd6af93b3083b7271c1c63 |
| Linux | Linux | 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b < e533889fc26aea0cd83c90327063f272061dd820 |
| Linux | Linux | 4.8 |