Canonical Ubuntu Linux 6.8/6.17/7.0 memory leak

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Canonical Ubuntu Linux 6.8/6.17/7.0. Impacted is an unknown function. Such manipulation leads to memory leak. This vulnerability is documented as CVE-2026-47326. The attack needs to be performed locally. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Canonical Ubuntu Linux 6.8/6.17/7.0. It has been rated as problematic. Affected by this issue is an unknown part. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability. CVE summarizes:

Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a memory leak in the handling of big responses to AppArmor notifications. The bug can be triggered by an unprivileged local user. The memory leak could lead to resource exhaustion.

The weakness was released by Tristan Madani. The advisory is available at git.launchpad.net. This vulnerability is handled as CVE-2026-47326 since 05/19/2026. The exploitation is known to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not 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, 6.17.0-35.35 or 7.0.0-22.22 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). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.5
CNA Vector (canonical): 🔒

CVSSv2info

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

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
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 6.8.0-124.124/6.17.0-35.35/7.0.0-22.22
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-2026-47326 (🔒)
GCVE (CVE): GCVE-0-2026-47326
GCVE (VulDB): GCVE-100-366866

Entryinfo

Created: 05/28/2026 22:25
Updated: 06/19/2026 13:55
Changes: 05/28/2026 22:25 (66), 06/19/2026 13:55 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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