Canonical Ubuntu Linux 6.8 AppArmor uninitialized variable

CVSS Meta Temp Score
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CTI Interest Score
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3.2$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Canonical Ubuntu Linux 6.8. This affects an unknown function of the component AppArmor. Executing a manipulation can lead to uninitialized variable. This vulnerability is registered as CVE-2026-47336. The attack needs to be launched locally. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Canonical Ubuntu Linux 6.8 and classified as problematic. This vulnerability affects an unknown part of the component AppArmor. The manipulation with an unknown input leads to a uninitialized variable vulnerability. The CWE definition for the vulnerability is CWE-457. The code uses a variable that has not been initialized, leading to unpredictable or unintended results. As an impact it is known to affect integrity. CVE summarizes:

Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/AF_INET6 socket mediation code. The bug can be triggered by an unprivileged local user and could result in incorrect fine-grained mediation of network sockets.

The weakness was published by Tristan Madani. The advisory is shared for download at git.launchpad.net. This vulnerability was named CVE-2026-47336 since 05/19/2026. The exploitation appears to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 321369 (Ubuntu 22.04 LTS : Linux kernel (Azure) vulnerabilities (USN-8440-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.8.0-124.124 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.launchpad.net. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (321369). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.3
CNA Vector (canonical): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Uninitialized variable
CWE: CWE-457 / CWE-453
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 321369
Nessus Name: Ubuntu 22.04 LTS : Linux kernel (Azure) vulnerabilities (USN-8440-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Ubuntu Linux 6.8.0-124.124
Patch: git.launchpad.net

Timelineinfo

05/19/2026 CVE reserved
05/28/2026 +9 days Advisory disclosed
05/28/2026 +0 days VulDB entry created
06/19/2026 +22 days VulDB entry last update

Sourcesinfo

Advisory: git.launchpad.net
Researcher: Tristan Madani
Status: Confirmed

CVE: CVE-2026-47336 (🔒)
GCVE (CVE): GCVE-0-2026-47336
GCVE (VulDB): GCVE-100-366880

Entryinfo

Created: 05/28/2026 22:36
Updated: 06/19/2026 17:47
Changes: 05/28/2026 22:36 (66), 06/19/2026 17:47 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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