Linux Kernel up to 5.17.0 Refcount net/llc/af_llc.c memory leak

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Linux Kernel up to 5.17.0. This vulnerability affects unknown code of the file net/llc/af_llc.c of the component Refcount Handler. Such manipulation leads to memory leak. This vulnerability is traded as CVE-2022-28356. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 5.17.0 (Operating System). Affected by this issue is an unknown function of the file net/llc/af_llc.c of the component Refcount Handler. 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.

The weakness was shared 04/03/2022 as 764f4eb6846f5475f1244767d24d25dd86528a4a. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2022-28356 since 04/02/2022. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 224699 (Linux Distros Unpatched Vulnerability : CVE-2022-28356), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.17.1 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. Applying the patch 764f4eb6846f5475f1244767d24d25dd86528a4a is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (224699). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 224699
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2022-28356

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.17.1
Patch: 764f4eb6846f5475f1244767d24d25dd86528a4a

Timelineinfo

04/02/2022 🔍
04/03/2022 +1 days 🔍
04/03/2022 +0 days 🔍
03/05/2025 +1067 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 764f4eb6846f5475f1244767d24d25dd86528a4a
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-28356 (🔍)
GCVE (CVE): GCVE-0-2022-28356
GCVE (VulDB): GCVE-100-196364

Entryinfo

Created: 04/03/2022 09:15
Updated: 03/05/2025 12:40
Changes: 04/03/2022 09:15 (46), 04/05/2022 17:39 (1), 03/05/2025 12:40 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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