CVE-2026-89840
f2fs: validate MOVE_RANGE destination size
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 16, 2026 |
| Last Updated | Oct 30, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new high vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
4dd6f977fc778e5a0da604e5f8cb2f36d163d27b < 454de20a5a36c000b75f49337aae8c92045c5242 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b < 54c587f3f95ce2d6932a16566db83f73cc4313e1 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b < bca61ee5192ea47003722486ae9588a2a4bb47b6 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b < db13064669526494cd78ba3a4394063b740e940c 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b < dcae1eeda53149f219dd6af93b3083b7271c1c63 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b < e533889fc26aea0cd83c90327063f272061dd820
Linux / Linux
4.8
References
git.kernel.org: https://git.kernel.org/stable/c/454de20a5a36c000b75f49337aae8c92045c5242 git.kernel.org: https://git.kernel.org/stable/c/54c587f3f95ce2d6932a16566db83f73cc4313e1 git.kernel.org: https://git.kernel.org/stable/c/bca61ee5192ea47003722486ae9588a2a4bb47b6 git.kernel.org: https://git.kernel.org/stable/c/db13064669526494cd78ba3a4394063b740e940c git.kernel.org: https://git.kernel.org/stable/c/dcae1eeda53149f219dd6af93b3083b7271c1c63 git.kernel.org: https://git.kernel.org/stable/c/e533889fc26aea0cd83c90327063f272061dd820