Linux Kernel up to 5.6.10 Netfilter nf_dup_netdev.c nf_tables_offload out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 5.6.10. Affected is the function nf_tables_offload of the file net/netfilter/nf_dup_netdev.c of the component Netfilter. The manipulation results in out-of-bounds write. This vulnerability was named CVE-2022-25636. The attack may be performed from remote. In addition, an exploit is available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.6.10 (Operating System). Affected is the function nf_tables_offload of the file net/netfilter/nf_dup_netdev.c of the component Netfilter. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 02/24/2022. The advisory is available at openwall.com. This vulnerability is traded as CVE-2022-25636 since 02/22/2022. Technical details and a public exploit are known.

A public exploit has been developed by bonfee. The exploit is shared for download at github.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 236676 (Alibaba Cloud Linux 3 : 0029: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2022:0029)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (236676). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: bonfee
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 236676
Nessus Name: Alibaba Cloud Linux 3 : 0029: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2022:0029)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

02/22/2022 🔍
02/24/2022 +2 days 🔍
02/24/2022 +0 days 🔍
05/18/2025 +1179 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: openwall.com
Status: Confirmed

CVE: CVE-2022-25636 (🔍)
GCVE (CVE): GCVE-0-2022-25636
GCVE (VulDB): GCVE-100-193698
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/24/2022 18:32
Updated: 05/18/2025 16:20
Changes: 02/24/2022 18:32 (42), 02/26/2022 09:38 (1), 03/08/2022 18:18 (3), 03/08/2022 18:19 (1), 05/18/2025 16:20 (20)
Complete: 🔍
Committer: bonfee
Cache ID: 216::103

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

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