CVE-2023-1295

What it is

A time-of-check to time-of-use issue exists in io_uring subsystem's IORING_OP_CLOSE operation in the Linux kernel's versions 5.6 - 5.11 (inclusive), which allows a local user to elevate their privileges to root. Introduced in b5dba59e0cf7e2cc4d3b3b1ac5fe81ddf21959eb, patched in 9eac1904d3364254d622bf2c771c4f85cd435fc2, backported to stable in 788d0824269bef539fe31a785b1517882eafed93.

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

0.2% chance of exploitation in the next 30 days (EPSS).

Fix

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

Timeline

1. 2023-06-28 12:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 05:27 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.2% in the next 30 days (EPSS).
• Severity: 7.8 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-06-28 12:15 UTC

Last modified

2026-06-17 05:27 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-367

Record status

Modified

Affected

• Linux Kernel < 5.10.162
• Linux Kernel < 5.11.6
• Netapp h300s
• Netapp h410c
• Netapp h410s
• Netapp h500s
• Netapp h700s

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-2023-1295.md and follow it. Check whether this project is affected by CVE-2023-1295. 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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