What is CVE-2026-31475?

CVE-2026-31475 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.14.9 onward and patched in 6.18.21, 6.19.11 and 7.0. CVE-2026-31475 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-31475?

CVE-2026-31475 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-31475?

Yes, CVE-2026-31475 has been patched. Fixed versions include 6.18.21, 6.19.11 and 7.0. If you are running Linux kernel 6.14.9 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-31475 actively exploited?

CVE-2026-31475 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-31475

High

In the Linux kernel, the following vulnerability has been resolved: ASoC: sma1307: fix double free of devm_kzalloc() memory A previous change added NULL checks and cleanup for allocation failures in sma1307_setting_loaded(). However, the cleanup for mode_set entries is wrong. Those entries are allocated with devm_kzalloc(), so they are device-managed resources and must not be freed with kfree(). Manually freeing them in the error path can lead to a double free when devres later releases the same memory. Drop the manual kfree() loop and let devres handle the cleanup.

Package Linux Kernel

Published 2026-04-22

Last modified 2026-04-27

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-415

CVE-2026-31475 is classified as CWE-415

See CWE-415 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.14.9, 6.15 and later are affected. Fixed in 6.18.21, 6.19.11, 7.0 and their respective stable series.

Affected from

≥ 6.14.9 ≥ 6.15

Fixed in

✓ 6.18.21 6.18.x ✓ 6.19.11 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-31475 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/1a82c3272626db9006f4c2cad3adf2916417aed6
Patch
Kernel patch commit
https://git.kernel.org/stable/c/d472d1a52985211b92883bb64bbe710b45980190
Patch
Kernel patch commit
https://git.kernel.org/stable/c/fe757092d2329c397ecb32f2bf68a5b1c4bd9193
Patch

Details

CVE ID CVE-2026-31475

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-04-22

Modified 2026-04-27

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-31475?

CVE-2026-31475 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.14.9 onward and has been patched in 6.18.21, 6.19.11 and 7.0. CVE-2026-31475 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-31475?

CVE-2026-31475 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-31475?

Yes — CVE-2026-31475 has been patched. Fixed versions include 6.18.21, 6.19.11 and 7.0. If you are running Linux kernel 6.14.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-31475 actively exploited?

No — CVE-2026-31475 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.