Linux Kernel 33fc42de33278b2b3ec6f3390512987bc29a62b7 Ethernet mtk_ppe.c __mtk_ppe_check_skb use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k1.97

Summaryinfo

A vulnerability has been found in Linux Kernel 33fc42de33278b2b3ec6f3390512987bc29a62b7 and classified as critical. This impacts the function __mtk_ppe_check_skb of the file drivers/net/ethernet/mediatek/mtk_ppe.c of the component Ethernet Handler. Performing a manipulation results in use after free. This vulnerability is known as CVE-2022-3636. No exploit is available. It is recommended to apply a patch to fix this issue. No released Linux Kernel version was ever affected by this CVE.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel 33fc42de33278b2b3ec6f3390512987bc29a62b7 (Operating System). This affects the function __mtk_ppe_check_skb of the file drivers/net/ethernet/mediatek/mtk_ppe.c of the component Ethernet Handler. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 10/21/2022. It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-3636. Technical details of the vulnerability are known, but there is no available exploit.

No released Linux Kernel version was ever affected by this CVE. The vulnerability scanner Nessus provides a plugin with the ID 246893 (Linux Distros Unpatched Vulnerability : CVE-2022-3636), which helps to determine the existence of the flaw in a target environment.

Applying the patch 17a5f6a78dc7b8db385de346092d7d9f9dc24df6 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

The vulnerability is also documented in the databases at Tenable (246893) and EUVD (EUVD-2022-42996). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

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

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector (VulDB): 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 246893
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2022-3636

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 17a5f6a78dc7b8db385de346092d7d9f9dc24df6

Timelineinfo

10/21/2022 🔍
10/21/2022 +0 days 🔍
10/21/2022 +0 days 🔍
07/28/2026 +1376 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-3636 (🔍)
GCVE (CVE): GCVE-0-2022-3636
GCVE (VulDB): GCVE-100-211935
EUVD: 🔍

Entryinfo

Created: 10/21/2022 12:44
Updated: 07/28/2026 22:38
Changes: 10/21/2022 12:44 (41), 11/19/2022 08:22 (2), 11/19/2022 08:23 (21), 08/10/2025 17:10 (16), 07/18/2026 02:35 (1), 07/28/2026 18:56 (5), 07/28/2026 22:38 (21)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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