What is CVE-2026-53030?

CVE-2026-53030 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 6.17 onward and patched in 6.18.33, 7.0.10 and 7.1. CVE-2026-53030 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-53030?

CVE-2026-53030 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-2026-53030?

Yes, CVE-2026-53030 has been patched. Fixed versions include 6.18.33, 7.0.10 and 7.1. If you are running Linux kernel 6.17 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-53030 actively exploited?

CVE-2026-53030 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2026-53030

Medium

In the Linux kernel, the following vulnerability has been resolved: i3c: master: renesas: Fix memory leak in renesas_i3c_i3c_xfers() The xfer structure allocated by renesas_i3c_alloc_xfer() was never freed in the renesas_i3c_i3c_xfers() function. Use the __free(kfree) cleanup attribute to automatically free the memory when the variable goes out of scope.

Package Linux Kernel

Published 2026-06-24

Last modified 2026-07-14

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-401

CVE-2026-53030 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.17 and later are affected. Fixed in 6.18.33, 7.0.10, 7.1 and their respective stable series.

Affected from

≥ 6.17

Fixed in

✓ 6.18.33 6.18.x ✓ 7.0.10 7.0.x ✓ 7.1

References

3 total

Kernel Git
https://git.kernel.org/stable/c/1b6a7e94be678d34a9ccb9db7e2443ae02ad2bc8

Patch
Kernel Git
https://git.kernel.org/stable/c/ab8f00ffcca0f618fb8198d358f24728950d9860

Patch
Kernel Git
https://git.kernel.org/stable/c/d7665c3b4f575251e449e2656879392346ca612b

Patch

Details

CVE ID CVE-2026-53030

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-06-24

Modified 2026-07-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-53030?

CVE-2026-53030 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 6.17 onward and has been patched in 6.18.33, 7.0.10 and 7.1. CVE-2026-53030 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-53030?

CVE-2026-53030 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-2026-53030?

Yes. CVE-2026-53030 has been patched. Fixed versions include 6.18.33, 7.0.10 and 7.1. If you are running Linux kernel 6.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-53030 actively exploited?

No. CVE-2026-53030 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.