CVE-2026-89840
HIGHCVSS 7.1Description
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.
Timeline
Published:September 16th, 2026 11:16 AM
Last modified:October 30th, 2026 1:20 PM
CVSS Scoring
CVSS v3: 7.1 (HIGH)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
References & Reports
Advisories, patches, and third-party reports
- https://git.kernel.org/stable/c/454de20a5a36c000b75f49337aae8c92045c5242
- https://git.kernel.org/stable/c/54c587f3f95ce2d6932a16566db83f73cc4313e1
- https://git.kernel.org/stable/c/bca61ee5192ea47003722486ae9588a2a4bb47b6
- https://git.kernel.org/stable/c/db13064669526494cd78ba3a4394063b740e940c
- https://git.kernel.org/stable/c/dcae1eeda53149f219dd6af93b3083b7271c1c63
- https://git.kernel.org/stable/c/e533889fc26aea0cd83c90327063f272061dd820
Source: NIST NVD · Data may lag official sources by up to one minute