ALPINE-CVE-2026-78410
A flaw was found in util-linux. Restricted bind mounts take the source path from fstab but do not pin that source before the privileged mount. A local unprivileged user who can replace the authorized source or a writable ancestor can redirect SUID mount(8) to bind another host directory. If the fstab entry also sets X-mount.owner, X-mount.group, or X-mount.mode, root then changes ownership or mode on that redirected inode.
ALPINE-CVE-2026-78410
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: osv:ALPINE-CVE-2026-78410
util-linux
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2.41.6-r0
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
util-linux
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2.41.6-r0
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
util-linux
Source reference: /affected/2/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2.42.3-r0
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.41.6-r0"
}
]
}
],
"package": {
"name": "util-linux",
"purl": "pkg:apk/alpine/util-linux?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-78410.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.41.6-r0"
}
]
}
],
"package": {
"name": "util-linux",
"purl": "pkg:apk/alpine/util-linux?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-78410.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.42.3-r0"
}
]
}
],
"package": {
"name": "util-linux",
"purl": "pkg:apk/alpine/util-linux?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-78410.json"
},
"ecosystem_specific": {}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55176 · Revision 1
- Added to Heist Feed
- Publisher date