Linux Kernel up to 5.18.12 Block Starting Symbol privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 5.18.12. This affects an unknown part of the component Block Starting Symbol Handler. Executing a manipulation can lead to an unknown weakness. This vulnerability is handled as CVE-2022-36123. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.18.12 (Operating System). It has been declared as problematic. This vulnerability affects an unknown part of the component Block Starting Symbol Handler. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The Linux kernel before 5.18.13 lacks a certain clear operation for the block starting symbol (.bss). This allows Xen PV guest OS users to cause a denial of service or gain privileges.

The weakness was released 07/29/2022 as SICK-2022-128. The advisory is available at github.com. This vulnerability was named CVE-2022-36123 since 07/16/2022. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 233382 (Amazon Linux 2 : kernel (ALAS-2025-2790)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.18.13 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. Applying the patch 74a0032b8524ee2bd4443128c0bf9775928680b0 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 (233382). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
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: 233382
Nessus Name: Amazon Linux 2 : kernel (ALAS-2025-2790)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.18.13
Patch: 74a0032b8524ee2bd4443128c0bf9775928680b0

Timelineinfo

07/16/2022 🔍
07/29/2022 +13 days 🔍
07/29/2022 +0 days 🔍
03/27/2025 +972 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: SICK-2022-128
Status: Confirmed

CVE: CVE-2022-36123 (🔍)
GCVE (CVE): GCVE-0-2022-36123
GCVE (VulDB): GCVE-100-205306

Entryinfo

Created: 07/29/2022 19:31
Updated: 03/27/2025 20:17
Changes: 07/29/2022 19:31 (44), 08/28/2022 15:01 (11), 03/27/2025 20:17 (16)
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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