f2fs: validate MOVE_RANGE destination size
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.
CVE-2026-89840
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-89840
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4dd6f977fc778e5a0da604e5f8cb2f36d163d27b",
"lessThan": "54c587f3f95ce2d6932a16566db83f73cc4313e1",
"versionType": "git"
},
{
"status": "affected",
"version": "4dd6f977fc778e5a0da604e5f8cb2f36d163d27b",
"lessThan": "bca61ee5192ea47003722486ae9588a2a4bb47b6",
"versionType": "git"
},
{
"status": "affected",
"version": "4dd6f977fc778e5a0da604e5f8cb2f36d163d27b",
"lessThan": "db13064669526494cd78ba3a4394063b740e940c",
"versionType": "git"
},
{
"status": "affected",
"version": "4dd6f977fc778e5a0da604e5f8cb2f36d163d27b",
"lessThan": "dcae1eeda53149f219dd6af93b3083b7271c1c63",
"versionType": "git"
},
{
"status": "affected",
"version": "4dd6f977fc778e5a0da604e5f8cb2f36d163d27b",
"lessThan": "e533889fc26aea0cd83c90327063f272061dd820",
"versionType": "git"
}
],
"programFiles": [
"fs/f2fs/file.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/f2fs/file.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89840
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #48560 · Revision 1
- Added to Heist Feed
- Publisher date