Linux Kernel up to 5.17.2 User Namespace fs/io_uring.c io_uring use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.17.2. Affected by this vulnerability is the function io_uring of the file fs/io_uring.c of the component User Namespace Handler. The manipulation leads to use after free. This vulnerability is uniquely identified as CVE-2022-29582. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 5.17.2 (Operating System). This issue affects the function io_uring of the file fs/io_uring.c of the component User Namespace Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 04/22/2022. It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2022-29582 since 04/22/2022. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 236670 (Alibaba Cloud Linux 3 : 0125: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2022:0125)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.17.3 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. Applying a patch 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.

The vulnerability is also documented in the databases at Tenable (236670) and EUVD (EUVD-2022-33915). Be aware that VulDB is the high quality source 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: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 236670
Nessus Name: Alibaba Cloud Linux 3 : 0125: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2022:0125)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.17.3
Patch: git.kernel.org

Timelineinfo

04/22/2022 🔍
04/22/2022 +0 days 🔍
04/22/2022 +0 days 🔍
05/23/2026 +1492 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: e677edbcabee849bfdd43f1602bccbecf736a646
Status: Confirmed

CVE: CVE-2022-29582 (🔍)
GCVE (CVE): GCVE-0-2022-29582
GCVE (VulDB): GCVE-100-198407
EUVD: 🔍

Entryinfo

Created: 04/22/2022 22:21
Updated: 05/23/2026 03:00
Changes: 04/22/2022 22:21 (44), 04/28/2022 19:33 (1), 04/28/2022 19:41 (1), 05/18/2025 19:00 (16), 05/23/2026 03:00 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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