VDB-306926 · CVE-2022-49786 · GCVE-0-2022-49786

Linux Kernel up to 6.0.9 blk-cgroup privilege escalation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.0.9 and classified as problematic. This issue affects some unknown processing of the component blk-cgroup. Such manipulation leads to an unknown weakness. This vulnerability is documented as CVE-2022-49786. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.0.9. It has been rated as problematic. Affected by this issue is an unknown code of the component blk-cgroup. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: properly pin the parent in blkcg_css_online blkcg_css_online is supposed to pin the blkcg of the parent, but 397c9f46ee4d refactored things and along the way, changed it to pin the css instead. This results in extra pins, and we end up leaking blkcgs and cgroups.

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2022-49786 since 05/01/2025. The technical details are unknown and an exploit is not available.

Upgrading to version 6.0.10 eliminates this vulnerability. Applying the patch d118247e404d6338f7b90636a3c6b95a387ed163/d7dbd43f4a828fa1d9a8614d5b0ac40aee6375fe is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.0.10
Patch: d118247e404d6338f7b90636a3c6b95a387ed163/d7dbd43f4a828fa1d9a8614d5b0ac40aee6375fe

Timelineinfo

05/01/2025 🔍
05/01/2025 +0 days 🔍
05/01/2025 +0 days 🔍
11/07/2025 +190 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-49786 (🔍)
GCVE (CVE): GCVE-0-2022-49786
GCVE (VulDB): GCVE-100-306926

Entryinfo

Created: 05/01/2025 17:20
Updated: 11/07/2025 19:20
Changes: 05/01/2025 17:20 (56), 11/07/2025 19:20 (11)
Complete: 🔍
Cache ID: 216::103