CVEvulnerability
CVE-2026-89840
7.1 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-09-16
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.1 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
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.
References
- 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 git.kernel.org