What is CVE-2026-80702?

CVE-2026-80702 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.4 onward and patched in 6.6.151, 6.12.103, 6.18.44 and others. CVE-2026-80702 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-80702?

CVE-2026-80702 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-2026-80702?

Yes, CVE-2026-80702 has been patched. Fixed versions include 6.6.151, 6.12.103, 6.18.44 and others. If you are running Linux kernel 6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-80702 actively exploited?

CVE-2026-80702 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-80702

High

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: fix guest_memory_dirty bitfield clobbered as size Two sites in vmwgfx_resource.c assign boolean literals to res->guest_memory_size, which is an unsigned long allocation-size field; the intended target is the adjacent res->guest_memory_dirty bitfield. After the assignments the field holds 0 or 1 instead of the resource's MOB allocation size: - vmw_resource_release() writes 0 (false), and - vmw_resource_unbind_list() writes 1 (true). Subsequent revalidation paths read guest_memory_size when computing the dirty page range (vmw_bo_dirty_transfer_to_res()) and the buffer allocation size (vmw_resource_buf_alloc()), producing zero-length walks or wrap-around ranges that read or write past the MOB bitmap. The dirty-tracking intent of the original code (mark the resource as dirtied since the last sync) is also lost, since guest_memory_dirty is never updated. Rename both assignments to guest_memory_dirty.

Package Linux Kernel

Published 2026-08-28

Last modified 2026-08-29

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 6.4 and later are affected. Fixed in 6.6.151, 6.12.103, 6.18.44, 7.1.8, 7.2 and their respective stable series.

Affected from

≥ 6.4

Fixed in

✓ 6.6.151 6.6.x ✓ 6.12.103 6.12.x ✓ 6.18.44 6.18.x ✓ 7.1.8 7.1.x ✓ 7.2

References

5 total

Details

CVE ID CVE-2026-80702

Severity High

CVSS score 7.8 / 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-2026-80702?

CVE-2026-80702 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.4 onward and has been patched in 6.6.151, 6.12.103, 6.18.44 and others. CVE-2026-80702 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-80702?

CVE-2026-80702 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-2026-80702?

Yes. CVE-2026-80702 has been patched. Fixed versions include 6.6.151, 6.12.103, 6.18.44 and others. If you are running Linux kernel 6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-80702 actively exploited?

No. CVE-2026-80702 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.