What is CVE-2026-80665?

CVE-2026-80665 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, affecting Linux kernel versions from 6.16 onward and patched in 6.18.40, 7.1.5 and 7.2. CVE-2026-80665 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-80665?

CVE-2026-80665 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:N/UI:N/S:C/C:N/I:N/A:H.

Is there a patch available for CVE-2026-80665?

Yes, CVE-2026-80665 has been patched. Fixed versions include 6.18.40, 7.1.5 and 7.2. If you are running Linux kernel 6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-80665 actively exploited?

CVE-2026-80665 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-80665

High

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Inject SEA if kvm_translate_vncr() can't resolve PFN kvm_handle_vncr_abort() assumes that s1_walk_result conveys an abort when kvm_translate_vncr() returns -EFAULT. This is not always the case as it's possible to encounter 'late' failures on the output of S1 translation, e.g. a GFN outside of the memslots. Fix it by preparing an external abort before returning from kvm_translate_vncr(). Get rid of the BUG_ON() in the fault injection path while at it.

Package Linux Kernel

Published 2026-08-28

Last modified 2026-08-29

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

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 6.16 and later are affected. Fixed in 6.18.40, 7.1.5, 7.2 and their respective stable series.

Affected from

≥ 6.16

Fixed in

✓ 6.18.40 6.18.x ✓ 7.1.5 7.1.x ✓ 7.2

References

3 total

Details

CVE ID CVE-2026-80665

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2026-08-28

Modified 2026-08-29

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-80665?

CVE-2026-80665 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 . It affects Linux kernel versions from 6.16 onward and has been patched in 6.18.40, 7.1.5 and 7.2. CVE-2026-80665 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-80665?

CVE-2026-80665 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:N/UI:N/S:C/C:N/I:N/A:H.
Is there a patch available for CVE-2026-80665?

Yes. CVE-2026-80665 has been patched. Fixed versions include 6.18.40, 7.1.5 and 7.2. If you are running Linux kernel 6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-80665 actively exploited?

No. CVE-2026-80665 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.