UBUNTU-CVE-2026-7837

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Source
https://ubuntu.com/security/CVE-2026-7837
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7837.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-7837
Upstream
  • CVE-2026-7837
Published
2026-05-21T09:16:00Z
Modified
2026-06-22T09:30:56.929486016Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions.

References

Affected packages

Ubuntu:25.10
netatalk

Package

Name
netatalk
Purl
pkg:deb/ubuntu/netatalk?arch=source&distro=questing

Affected ranges

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

Affected versions

4.*
4.1.2~ds-4
4.2.1~ds-1
4.2.3~ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "a2boot",
            "binary_version": "4.2.3~ds-1"
        },
        {
            "binary_name": "atalkd",
            "binary_version": "4.2.3~ds-1"
        },
        {
            "binary_name": "libatalk",
            "binary_version": "4.2.3~ds-1"
        },
        {
            "binary_name": "macipgw",
            "binary_version": "4.2.3~ds-1"
        },
        {
            "binary_name": "netatalk",
            "binary_version": "4.2.3~ds-1"
        },
        {
            "binary_name": "netatalk-tests",
            "binary_version": "4.2.3~ds-1"
        },
        {
            "binary_name": "netatalk-tools",
            "binary_version": "4.2.3~ds-1"
        },
        {
            "binary_name": "papd",
            "binary_version": "4.2.3~ds-1"
        },
        {
            "binary_name": "timelord",
            "binary_version": "4.2.3~ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7837.json"
Ubuntu:26.04:LTS
netatalk

Package

Name
netatalk
Purl
pkg:deb/ubuntu/netatalk?arch=source&distro=resolute

Affected ranges

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

Affected versions

4.*
4.2.3~ds-1
4.2.3~ds-2
4.2.3~ds-2.1
4.2.3~ds-2.1ubuntu0.1
4.2.3~ds-2.1ubuntu0.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "a2boot",
            "binary_version": "4.2.3~ds-2.1ubuntu0.2"
        },
        {
            "binary_name": "atalkd",
            "binary_version": "4.2.3~ds-2.1ubuntu0.2"
        },
        {
            "binary_name": "libatalk",
            "binary_version": "4.2.3~ds-2.1ubuntu0.2"
        },
        {
            "binary_name": "macipgw",
            "binary_version": "4.2.3~ds-2.1ubuntu0.2"
        },
        {
            "binary_name": "netatalk",
            "binary_version": "4.2.3~ds-2.1ubuntu0.2"
        },
        {
            "binary_name": "netatalk-tests",
            "binary_version": "4.2.3~ds-2.1ubuntu0.2"
        },
        {
            "binary_name": "netatalk-tools",
            "binary_version": "4.2.3~ds-2.1ubuntu0.2"
        },
        {
            "binary_name": "papd",
            "binary_version": "4.2.3~ds-2.1ubuntu0.2"
        },
        {
            "binary_name": "timelord",
            "binary_version": "4.2.3~ds-2.1ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7837.json"
Ubuntu:Pro:14.04:LTS
netatalk

Package

Name
netatalk
Purl
pkg:deb/ubuntu/netatalk?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

2.*
2.2.2-1ubuntu1
2.2.2-1ubuntu2
2.2.2-1ubuntu2.2
2.2.2-1ubuntu2.2+esm1
2.2.2-1ubuntu2.2+esm2
2.2.2-1ubuntu2.2+esm3
2.2.2-1ubuntu2.2+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "netatalk",
            "binary_version": "2.2.2-1ubuntu2.2+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7837.json"
Ubuntu:Pro:16.04:LTS
netatalk

Package

Name
netatalk
Purl
pkg:deb/ubuntu/netatalk?arch=source&distro=esm-apps-legacy%2Fxenial

Affected ranges

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

Affected versions

2.*
2.2.5-1
2.2.5-1ubuntu0.2
2.2.5-1ubuntu0.2+esm1
2.2.5-1ubuntu0.2+esm2
2.2.5-1ubuntu0.2+esm3
2.2.5-1ubuntu0.2+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "netatalk",
            "binary_version": "2.2.5-1ubuntu0.2+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7837.json"
Ubuntu:Pro:18.04:LTS
netatalk

Package

Name
netatalk
Purl
pkg:deb/ubuntu/netatalk?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

2.*
2.2.6-1
2.2.6-1ubuntu0.18.04.2
2.2.6-1ubuntu0.18.04.2+esm1
2.2.6-1ubuntu0.18.04.2+esm2
2.2.6-1ubuntu0.18.04.2+esm3
2.2.6-1ubuntu0.18.04.2+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "netatalk",
            "binary_version": "2.2.6-1ubuntu0.18.04.2+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7837.json"
Ubuntu:Pro:20.04:LTS
netatalk

Package

Name
netatalk
Purl
pkg:deb/ubuntu/netatalk?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

3.*
3.1.12~ds-3
3.1.12~ds-4
3.1.12~ds-4ubuntu0.20.04.1
3.1.12~ds-4ubuntu0.20.04.3
3.1.12~ds-4ubuntu0.20.04.3+esm1
3.1.12~ds-4ubuntu0.20.04.4
3.1.12~ds-4ubuntu0.20.04.4+esm1
3.1.12~ds-4ubuntu0.20.04.4+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "netatalk",
            "binary_version": "3.1.12~ds-4ubuntu0.20.04.4+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7837.json"
Ubuntu:Pro:22.04:LTS
netatalk

Package

Name
netatalk
Purl
pkg:deb/ubuntu/netatalk?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

3.*
3.1.12~ds-9
3.1.12~ds-9build1
3.1.12~ds-9ubuntu0.22.04.1
3.1.12~ds-9ubuntu0.22.04.3
3.1.12~ds-9ubuntu0.22.04.3+esm1
3.1.12~ds-9ubuntu0.22.04.4
3.1.12~ds-9ubuntu0.22.04.4+esm1
3.1.12~ds-9ubuntu0.22.04.4+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "netatalk",
            "binary_version": "3.1.12~ds-9ubuntu0.22.04.4+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7837.json"
Ubuntu:Pro:24.04:LTS
netatalk

Package

Name
netatalk
Purl
pkg:deb/ubuntu/netatalk?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

3.*
3.1.15~ds-1ubuntu1
3.1.18~ds-1
3.1.18~ds-1build2
3.1.18~ds-1build4
3.1.18~ds-1ubuntu0.1~esm1
3.1.18~ds-1ubuntu0.1~esm2
3.1.18~ds-1ubuntu0.1~esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "netatalk",
            "binary_version": "3.1.18~ds-1ubuntu0.1~esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7837.json"