DEBIAN-CVE-2026-19730
The 'podman quadlet install --replace' command opens the existing destination file with O_CREATE|O_WRONLY but omits O_TRUNC. When the initial reflink copy attempt fails (common on non-reflink-capable filesystems including many RHEL default XFS configurations), the fallback in ReflinkOrCopy uses io.Copy which performs a non-truncating write. If the original Quadlet is larger than the new Quadlet, the file is not truncated and content from the original is preserved. The command completes with no warning. There is no risk of information leakage as the user already had access to the Quadlet in order to replace it, and in most cases, this would only lead to invalid Quadlet files. However, security-related options from the end of the old Quadlet could be included in the new Quadlet, and if the truncation resulted in a valid Quadlet file, this could result in undesirable behavior. For example, running podman quadlet install --replace to remove a single line from the end of a Quadlet - including security-sensitive content, like AddCapability - will fail, and the option will continue to be used. Further, with Volume Quadlets, this can include additional mounts which can cause content to be unintentionally exposed into containers. If, later, the image is updated then compromised content might be leaked to an attacker. The vulnerable code paths are in pkg/domain/infra/abi/quadlet.go (lines 338-360, O_CREATE|O_WRONLY without O_TRUNC) and vendor/go.podman.io/storage/pkg/fileutils/reflink_
DEBIAN-CVE-2026-19730
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:DEBIAN-CVE-2026-19730
podman
Source reference: /affected/0/package/name
- Affected versions
- 5.4.2+ds1-2
Source reference:
/affected/0/versions5.6.1+ds1-1Source reference:
/affected/0/versions5.6.1+ds1-2Source reference:
/affected/0/versions5.6.1+ds2-2Source reference:
/affected/0/versions5.6.1+ds2-3Source reference:
/affected/0/versions5.6.2+ds1-1Source reference:
/affected/0/versions5.6.2+ds1-2Source reference:
/affected/0/versions5.6.2+ds1-3Source reference:
/affected/0/versions5.6.2+ds1-3+exp1Source reference:
/affected/0/versions5.6.2+ds1-4Source reference:
/affected/0/versions5.7.0+ds2-1Source reference:
/affected/0/versions5.7.0+ds2-2Source reference:
/affected/0/versions5.7.0+ds2-3Source reference:
/affected/0/versions5.8.0+ds1-1Source reference:
/affected/0/versions5.8.1+ds1-1Source reference:
/affected/0/versions5.8.1+ds1-2Source reference:
/affected/0/versions5.8.1+ds1-3Source reference:
/affected/0/versions5.8.2+ds1-1Source reference:
/affected/0/versions5.8.2+ds1-2Source reference:
/affected/0/versions5.8.2+ds1-3Source reference:
/affected/0/versions5.8.3+ds1-1Source reference:
/affected/0/versions5.8.4+ds1-1Source reference:
/affected/0/versions5.8.4+ds1-2Source reference:
/affected/0/versions - Fixed versions
- 5.8.6+ds1-1
Source reference:
/affected/0/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": "5.8.6+ds1-1"
}
]
}
],
"package": {
"name": "podman",
"purl": "pkg:deb/debian/podman?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"5.4.2+ds1-2",
"5.6.1+ds1-1",
"5.6.1+ds1-2",
"5.6.1+ds2-2",
"5.6.1+ds2-3",
"5.6.2+ds1-1",
"5.6.2+ds1-2",
"5.6.2+ds1-3",
"5.6.2+ds1-3+exp1",
"5.6.2+ds1-4",
"5.7.0+ds2-1",
"5.7.0+ds2-2",
"5.7.0+ds2-3",
"5.8.0+ds1-1",
"5.8.1+ds1-1",
"5.8.1+ds1-2",
"5.8.1+ds1-3",
"5.8.2+ds1-1",
"5.8.2+ds1-2",
"5.8.2+ds1-3",
"5.8.3+ds1-1",
"5.8.4+ds1-1",
"5.8.4+ds1-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-19730.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]- Related CVEs
- CVE-2026-19730
Source reference:
/upstream
Publisher severity
medium
Source reference: /severity/0/score
- Event
- #67666 · Revision 1
- Added to Heist Feed
- Publisher date