What is CVE-2026-68427?

CVE-2026-68427 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.1.178 onward and patched in 6.1.183, 6.6.148, 6.12.101 and others. CVE-2026-68427 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-68427?

CVE-2026-68427 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-2026-68427?

Yes, CVE-2026-68427 has been patched. Fixed versions include 6.1.183, 6.6.148, 6.12.101 and others. If you are running Linux kernel 6.1.178 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-68427 actively exploited?

CVE-2026-68427 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-68427

High

In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Fix use-after-free in host1x_bo_clear_cached_mappings __host1x_bo_unpin() drops the last reference to the mapping and frees it, so we can't dereference mapping afterwards. The cache itself outlives the mapping, so use the cache local variable instead.

Package Linux Kernel

Published 2026-08-10

Last modified 2026-08-19

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

Affected versions

Linux kernel versions 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5 and later are affected. Fixed in 6.1.183, 6.6.148, 6.12.101, 6.18.42, 7.1.6 and their respective stable series.

Affected from

≥ 6.1.178 ≥ 6.6.145 ≥ 6.12.97 ≥ 6.18.40 ≥ 7.1.5

Fixed in

✓ 6.1.183 6.1.x ✓ 6.6.148 6.6.x ✓ 6.12.101 6.12.x ✓ 6.18.42 6.18.x ✓ 7.1.6 7.1.x

References

6 total

Showing 5 of 6 references View all on NVD

Details

CVE ID CVE-2026-68427

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-08-10

Modified 2026-08-19

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-68427?

CVE-2026-68427 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.1.178 onward and has been patched in 6.1.183, 6.6.148, 6.12.101 and others. CVE-2026-68427 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-68427?

CVE-2026-68427 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-2026-68427?

Yes. CVE-2026-68427 has been patched. Fixed versions include 6.1.183, 6.6.148, 6.12.101 and others. If you are running Linux kernel 6.1.178 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-68427 actively exploited?

No. CVE-2026-68427 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.