What is CVE-2026-68447?

CVE-2026-68447 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, affecting Linux kernel versions from 5.18 onward and patched in 7.1.6 and 7.2. CVE-2026-68447 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-68447?

CVE-2026-68447 has a CVSS score of 7.1 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:N/A:H.

Is there a patch available for CVE-2026-68447?

Yes, CVE-2026-68447 has been patched. Fixed versions include 7.1.6 and 7.2. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-68447 actively exploited?

CVE-2026-68447 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-68447

High

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: clamp v9 CRIU control stack checkpoint copy to BO size CRIU checkpoint copies the MQD control stack using cp_hqd_cntl_stack_size from hardware without bounding it to the allocated BO region. If the HW field is larger than the queue's control stack allocation, memcpy reads past the BO into adjacent GTT memory and can leak kernel data to userspace. Store the page-aligned control stack BO size in mqd_manager and clamp checkpoint copies and reported checkpoint sizes to min(cp_hqd_cntl_stack_size, mm->ctl_stack_size). Apply the same bound for multi-XCC v9.4.3 checkpoint layout. (cherry picked from commit 6c2abd0ec09e86c6323010673766f76050e28aa3)

Package Linux Kernel

Published 2026-08-12

Last modified 2026-08-18

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 5.18 and later are affected. Fixed in 7.1.6, 7.2 and their respective stable series.

Affected from

≥ 5.18

Fixed in

✓ 7.1.6 7.1.x ✓ 7.2

References

2 total

Details

CVE ID CVE-2026-68447

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2026-08-12

Modified 2026-08-18

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-68447?

CVE-2026-68447 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 . It affects Linux kernel versions from 5.18 onward and has been patched in 7.1.6 and 7.2. CVE-2026-68447 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-68447?

CVE-2026-68447 has a CVSS score of 7.1 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:N/A:H.
Is there a patch available for CVE-2026-68447?

Yes. CVE-2026-68447 has been patched. Fixed versions include 7.1.6 and 7.2. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-68447 actively exploited?

No. CVE-2026-68447 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.