Linux Kernel up to 5.17.3 null_blk denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.17.3. It has been classified as problematic. Impacted is an unknown function of the component null_blk. This manipulation causes denial of service. The identification of this vulnerability is CVE-2022-49057. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel up to 5.17.3. Affected by this vulnerability is an unknown code block of the component null_blk. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: block: null_blk: end timed out poll request When poll request is timed out, it is removed from the poll list, but not completed, so the request is leaked, and never get chance to complete. Fix the issue by ending it in timeout handler.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2022-49057 since 02/26/2025. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 5.17.4 eliminates this vulnerability. Applying the patch 407d09a22f3f685fd634aa5d05840c64b23bfebc/3e3876d322aef82416ecc496a4d4a587e0fdf7a3 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.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.17.4
Patch: 407d09a22f3f685fd634aa5d05840c64b23bfebc/3e3876d322aef82416ecc496a4d4a587e0fdf7a3

Timelineinfo

02/26/2025 🔍
02/26/2025 +0 days 🔍
02/26/2025 +0 days 🔍
09/24/2025 +209 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-49057 (🔍)
GCVE (CVE): GCVE-0-2022-49057
GCVE (VulDB): GCVE-100-297379

Entryinfo

Created: 02/26/2025 11:25
Updated: 09/24/2025 01:49
Changes: 02/26/2025 11:25 (58), 09/24/2025 01:49 (12)
Complete: 🔍
Cache ID: 216::103

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