CVE-2026-23092

What it is

In the Linux kernel, the following vulnerability has been resolved: iio: dac: ad3552r-hs: fix out-of-bound write in ad3552r_hs_write_data_source When simple_write_to_buffer() succeeds, it returns the number of bytes actually copied to the buffer. The code incorrectly uses 'count' as the index for null termination instead of the actual bytes copied. If count exceeds the buffer size, this leads to out-of-bounds write. Add a check for the count and use the return value as the index. The bug was validated using a demo module that mirrors the original code and was tested under QEMU. Pattern of the bug: - A fixed 64-byte stack buffer is filled using count. - If count > 64, the code still does buf[count] = '\0', causing an - out-of-bounds write on the stack. Steps for reproduce: - Opens the device node. - Writes 128 bytes of A to it. - This overflows the 64-byte stack buffer and KASAN reports the OOB. Found via static analysis. This is similar to the commit da9374819eb3 ("iio: backend: fix out-of-bound write")

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. 2026-02-04 17:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 10:20 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

2026-02-04 17:16 UTC

Last modified

2026-06-17 10:20 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-787 · Out-of-bounds write

Record status

Analyzed

Affected

• Linux Kernel < 6.18.8
• Linux Kernel 6.19

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-2026-23092.md and follow it. Check whether this project is affected by CVE-2026-23092. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

Copy as ticket · More options · Status badge