What is CVE-2026-45947?

CVE-2026-45947 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 6.5 onward and patched in 6.6.128, 6.12.75, 6.18.14 and others. CVE-2026-45947 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-45947?

CVE-2026-45947 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-2026-45947?

Yes, CVE-2026-45947 has been patched. Fixed versions include 6.6.128, 6.12.75, 6.18.14 and others. If you are running Linux kernel 6.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-45947 actively exploited?

CVE-2026-45947 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-2026-45947

Medium

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix memory leak in amdgpu_acpi_enumerate_xcc() In amdgpu_acpi_enumerate_xcc(), if amdgpu_acpi_dev_init() returns -ENOMEM, the function returns directly without releasing the allocated xcc_info, resulting in a memory leak. Fix this by ensuring that xcc_info is properly freed in the error paths. Compile tested only. Issue found using a prototype static analysis tool and code review.

Package Linux Kernel

Published 2026-05-27

Last modified 2026-06-16

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-2026-45947 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 6.5 and later are affected. Fixed in 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0 and their respective stable series.

Affected from

≥ 6.5

Fixed in

✓ 6.6.128 6.6.x ✓ 6.12.75 6.12.x ✓ 6.18.14 6.18.x ✓ 6.19.4 6.19.x ✓ 7.0

References

5 total

Kernel Git
https://git.kernel.org/stable/c/18a7bbd11f17a7cd4c42fd5955d3675d68c692df

Patch
Kernel Git
https://git.kernel.org/stable/c/7e4b612fe7a960d610c20260c9ee220bddd1b215

Patch
Kernel Git
https://git.kernel.org/stable/c/c9be63d565789b56ca7b0197e2cb78a3671f95a8

Patch
Kernel Git
https://git.kernel.org/stable/c/d1370ef2ecf7d4df25e3e1e430cd191b1e7f8596

Patch
Kernel Git
https://git.kernel.org/stable/c/e87c73a80a12d337cf5f493c0956f6c2c9eafd80

Patch

Details

CVE ID CVE-2026-45947

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-27

Modified 2026-06-16

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-45947?

CVE-2026-45947 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 6.5 onward and has been patched in 6.6.128, 6.12.75, 6.18.14 and others. CVE-2026-45947 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-45947?

CVE-2026-45947 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-2026-45947?

Yes. CVE-2026-45947 has been patched. Fixed versions include 6.6.128, 6.12.75, 6.18.14 and others. If you are running Linux kernel 6.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-45947 actively exploited?

No. CVE-2026-45947 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.