CVE-2026-89840
- Source
- https://cve.org/CVERecord?id=CVE-2026-89840
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89840.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-89840
- Downstream
- Published
- 2026-09-16T10:31:14Z
- Modified
- 2026-09-18T03:48:33Z
- Severity
-
- 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
- Summary
- f2fs: validate MOVE_RANGE destination size
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89840.json" }- References
-
- https://git.kernel.org/stable/c/dcae1eeda53149f219dd6af93b3083b7271c1c63
- https://git.kernel.org/stable/c/e533889fc26aea0cd83c90327063f272061dd820
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89840.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-89840
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git