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DEBIAN-CVE-2026-52791

Type: advisorySource: OSV1 source record

fuse-overlayfs is an implementation of overlayfs in FUSE for rootless containers. Prior to 1.17, the release-1.x C branch preserves SUID and SGID mode bits in main.c during open(O_TRUNC) and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with mode 4777. This issue is fixed in version 1.17.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-52791

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-2026-52791

fuse-overlayfs

Source reference: /affected/0/package/name

Affected versions
1.10-1

Source reference: /affected/0/versions

1.13-1

Source reference: /affected/0/versions

1.14-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

fuse-overlayfs

Source reference: /affected/1/package/name

Affected versions
1.14-1

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

fuse-overlayfs

Source reference: /affected/2/package/name

Affected versions
1.14-1

Source reference: /affected/2/versions

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.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "fuse-overlayfs",
      "purl": "pkg:deb/debian/fuse-overlayfs?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.10-1",
      "1.13-1",
      "1.14-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-52791.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "fuse-overlayfs",
      "purl": "pkg:deb/debian/fuse-overlayfs?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.14-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-52791.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "fuse-overlayfs",
      "purl": "pkg:deb/debian/fuse-overlayfs?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.14-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-52791.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57294 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-52791 · Revision 1Source updated