Linux Kernel Filesystem legacy_parse_param supplied integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel. This impacts the function legacy_parse_param of the component Filesystem Handler. Executing a manipulation of the argument supplied can lead to integer overflow. This vulnerability is handled as CVE-2022-0185. The attack can be executed remotely. Additionally, an exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel (Operating System) (the affected version unknown). This vulnerability affects the function legacy_parse_param of the component Filesystem Handler. The manipulation of the argument supplied with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 02/12/2022. The advisory is shared for download at openwall.com. This vulnerability was named CVE-2022-0185 since 01/11/2022. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as attacked. 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. This issue was added on 08/21/2024 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 09/11/2024:

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

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). 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: 7.7
VulDB Meta Temp Score: 7.6

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.4
NVD Vector: 🔍

CNA Base Score: 8.4
CNA Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

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

01/11/2022 🔍
02/12/2022 +32 days 🔍
02/12/2022 +0 days 🔍
05/18/2025 +1191 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: openwall.com
Status: Confirmed

CVE: CVE-2022-0185 (🔍)
GCVE (CVE): GCVE-0-2022-0185
GCVE (VulDB): GCVE-100-192916
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/12/2022 06:53
Updated: 05/18/2025 15:20
Changes: 02/12/2022 06:53 (44), 02/16/2022 14:09 (1), 08/21/2024 21:31 (28), 08/22/2024 03:24 (19), 08/22/2024 15:44 (11), 09/03/2024 23:58 (1), 09/30/2024 05:12 (1), 05/18/2025 15:20 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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