Linux Kernel io_uring Subsystem fs/io_uring.c io_register_personality use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.6$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel. This impacts the function io_register_personality of the file fs/io_uring.c of the component io_uring Subsystem. The manipulation leads to use after free. This vulnerability is documented as CVE-2022-1043. The attack can be initiated remotely. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (the affected version is unknown) and classified as critical. This issue affects the function io_register_personality of the file fs/io_uring.c of the component io_uring Subsystem. 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 summary by CVE is:

A flaw was found in the Linux kernel’s io_uring implementation. This flaw allows an attacker with a local account to corrupt system memory, crash the system or escalate privileges.

The weakness was released 08/29/2022 as ZDI-22-362. It is possible to read the advisory at zerodayinitiative.com. The identification of this vulnerability is CVE-2022-1043 since 03/22/2022. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/03/2026).

The vulnerability scanner Nessus provides a plugin with the ID 250230 (Linux Distros Unpatched Vulnerability : CVE-2022-1043), which helps to determine the existence of the flaw in a target environment.

Applying the patch a30f895ad3239f45012e860d4f94c1a388b36d14 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the databases at Tenable (250230) and EUVD (EUVD-2022-24390). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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License

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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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: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 250230
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2022-1043

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: a30f895ad3239f45012e860d4f94c1a388b36d14

Timelineinfo

03/22/2022 🔍
08/29/2022 +159 days 🔍
08/29/2022 +0 days 🔍
04/03/2026 +1313 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: ZDI-22-362
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-1043 (🔍)
GCVE (CVE): GCVE-0-2022-1043
GCVE (VulDB): GCVE-100-207491
EUVD: 🔍

Entryinfo

Created: 08/29/2022 18:39
Updated: 04/03/2026 06:02
Changes: 08/29/2022 18:39 (45), 10/09/2022 10:36 (10), 08/16/2025 19:29 (16), 04/03/2026 06:02 (1)
Complete: 🔍
Cache ID: 216::103

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

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