CVE-2022-4696

What it is

There exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation. If IORING_OP_SPLICE is missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current->nsproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current->nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2023-01-11 13:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-09-01 18:05 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.4% in the next 30 days (EPSS).
• Severity: 7.8 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-01-11 13:15 UTC

Last modified

2026-09-01 18:05 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-763

Record status

Analyzed

Affected

• Netapp h410s Firmware
• Netapp h410c Firmware
• Netapp h700s Firmware
• Netapp h500s Firmware
• Netapp h300s Firmware
• Linux Kernel < 5.10.160
• Linux Kernel < 5.12

Attack profile CVSS 3.1 · 7.8

Attack vector

Local

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2022-4696.md and follow it. Check whether this project is affected by CVE-2022-4696. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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