What is CVE-2026-53376?

CVE-2026-53376 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.17 onward and patched in 6.6.140, 6.12.90, 6.18.32 and others. CVE-2026-53376 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-53376?

CVE-2026-53376 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-2026-53376?

Yes, CVE-2026-53376 has been patched. Fixed versions include 6.6.140, 6.12.90, 6.18.32 and others. If you are running Linux kernel 4.17 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-53376 actively exploited?

CVE-2026-53376 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-53376

Medium

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Add upper bound check for num_of_nodes drm/amdkfd: Add upper bound check for num_of_nodes in kfd_ioctl_get_process_apertures_new. (cherry picked from commit 98ff46a5ea090c14d2cdb4f5b993b05d74f3949f)

Package Linux Kernel

Published 2026-07-19

Last modified 2026-07-29

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

Affected versions

Linux kernel versions 4.17 and later are affected. Fixed in 6.6.140, 6.12.90, 6.18.32, 7.0.9, 7.1 and their respective stable series.

Affected from

≥ 4.17

Fixed in

✓ 6.6.140 6.6.x ✓ 6.12.90 6.12.x ✓ 6.18.32 6.18.x ✓ 7.0.9 7.0.x ✓ 7.1

References

5 total

Kernel Git
https://git.kernel.org/stable/c/44d5a450c04d3d734c13a03561c3131020d66edf

Patch
Kernel Git
https://git.kernel.org/stable/c/4a8093c7def141cc6e854fbe3f9693867982418f

Patch
Kernel Git
https://git.kernel.org/stable/c/6ba6ec5fcbb0d03ca11ed1cc38d57a7deb6c6b20

Patch
Kernel Git
https://git.kernel.org/stable/c/74b73fa56a395d46745e4f245225963e9f8be7f1

Patch
Kernel Git
https://git.kernel.org/stable/c/7b80137eb8aa9d1cbfe7ccf3eeb1faa94ae35d7e

Patch

Details

CVE ID CVE-2026-53376

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-07-19

Modified 2026-07-29

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-53376?

CVE-2026-53376 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.17 onward and has been patched in 6.6.140, 6.12.90, 6.18.32 and others. CVE-2026-53376 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-53376?

CVE-2026-53376 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-2026-53376?

Yes. CVE-2026-53376 has been patched. Fixed versions include 6.6.140, 6.12.90, 6.18.32 and others. If you are running Linux kernel 4.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-53376 actively exploited?

No. CVE-2026-53376 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.