UBUNTU-CVE-2026-52791

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Source
https://ubuntu.com/security/CVE-2026-52791
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-52791.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-52791
Upstream
Published
2026-07-29T17:16:00Z
Modified
2026-08-06T03:09:40Z
Severity
  • 2.0 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:20.04:LTS / fuse-overlayfs

Package

Name
fuse-overlayfs
Purl
pkg:deb/ubuntu/fuse-overlayfs?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.3-1
0.7-1
0.7.2-1
0.7.3-1
0.7.4-1
0.7.5-1
0.7.6-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fuse-overlayfs",
            "binary_version": "0.7.6-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-52791.json"

Ubuntu:22.04:LTS / fuse-overlayfs

Package

Name
fuse-overlayfs
Purl
pkg:deb/ubuntu/fuse-overlayfs?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.4.0-1
1.7.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fuse-overlayfs",
            "binary_version": "1.7.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-52791.json"

Ubuntu:24.04:LTS / fuse-overlayfs

Package

Name
fuse-overlayfs
Purl
pkg:deb/ubuntu/fuse-overlayfs?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.10-1
1.13-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fuse-overlayfs",
            "binary_version": "1.13-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-52791.json"

Ubuntu:26.04:LTS / fuse-overlayfs

Package

Name
fuse-overlayfs
Purl
pkg:deb/ubuntu/fuse-overlayfs?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.14-1build1
1.14-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fuse-overlayfs",
            "binary_version": "1.14-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-52791.json"