What is CVE-2026-43354?

CVE-2026-43354 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Divide By Zero flaw (CWE-369), affecting Linux kernel versions from 6.12 onward and patched in 6.12.78, 6.18.19, 6.19.9 and others. CVE-2026-43354 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-43354?

CVE-2026-43354 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-43354?

Yes, CVE-2026-43354 has been patched. Fixed versions include 6.12.78, 6.18.19, 6.19.9 and others. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-43354 actively exploited?

CVE-2026-43354 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Divide By Zero (CWE-369)?

The product divides a value by zero, causing a crash or unexpected behaviour. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/369.html

CVE-2026-43354

Medium

In the Linux kernel, the following vulnerability has been resolved: iio: proximity: hx9023s: Protect against division by zero in set_samp_freq Avoid division by zero when sampling frequency is unspecified.

Package Linux Kernel

Published 2026-05-08

Last modified 2026-05-15

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-369

CVE-2026-43354 is a Divide By Zero vulnerability

What is Divide By Zero?

The product divides a value by zero, causing a crash or unexpected behaviour. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.12 and later are affected. Fixed in 6.12.78, 6.18.19, 6.19.9, 7.0 and their respective stable series.

Affected from

≥ 6.12

Fixed in

✓ 6.12.78 6.12.x ✓ 6.18.19 6.18.x ✓ 6.19.9 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-43354 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/451ec5e67444f8460f9706a1bde146b5bbc86ce6
Patch
Kernel patch commit
https://git.kernel.org/stable/c/739fdfe65678d8e5dcf59496c56b32ab3ba3dbaa
Patch
Kernel patch commit
https://git.kernel.org/stable/c/a318cfc0853706f1d6ce682dba660bc455d674ef
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2026-43354

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-08

Modified 2026-05-15

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-43354?

CVE-2026-43354 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Divide By Zero flaw (CWE-369) . It affects Linux kernel versions from 6.12 onward and has been patched in 6.12.78, 6.18.19, 6.19.9 and others. CVE-2026-43354 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-43354?

CVE-2026-43354 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-43354?

Yes — CVE-2026-43354 has been patched. Fixed versions include 6.12.78, 6.18.19, 6.19.9 and others. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-43354 actively exploited?

No — CVE-2026-43354 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Divide By Zero (CWE-369)?

The product divides a value by zero, causing a crash or unexpected behaviour. View CWE-369 on MITRE CWE →