What is CVE-2026-98002?

CVE-2026-98002 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 7.0 onward and patched in 7.2.7 and 7.3-rc3. CVE-2026-98002 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-98002?

CVE-2026-98002 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Is there a patch available for CVE-2026-98002?

Yes, CVE-2026-98002 has been patched. Fixed versions include 7.2.7 and 7.3-rc3. If you are running Linux kernel 7.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-98002 actively exploited?

CVE-2026-98002 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-98002

High

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix ineffective error check in nested domain allocation amd_iommu_pdom_id_alloc() returns an int: a domain ID on success, or the negative errno from ida_alloc_range() when the ID space is exhausted or memory is short. amd_iommu_alloc_domain_nested() stores that return value in gdom_info->hdom_id, which is a u32, and only then tests it: gdom_info->hdom_id = amd_iommu_pdom_id_alloc(); if (gdom_info->hdom_id <= 0) { The assignment discards the sign, so -ENOSPC becomes 0xffffffe4 and the test never fires. The nested domain is then set up with a host domain ID that was never allocated, instead of the allocation failing with -ENOSPC. Keep the value in an int, test it there, and store it only once it is known to be valid, which is what the other amd_iommu_pdom_id_alloc() callers already do.

Package Linux Kernel

Published 2026-09-25

Last modified 2026-09-25

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 7.0 and later are affected. Fixed in 7.2.7, 7.3-rc3 and their respective stable series.

Affected from

≥ 7.0

Fixed in

✓ 7.2.7 7.2.x ✓ 7.3-rc3

References

2 total

Details

CVE ID CVE-2026-98002

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-09-25

Modified 2026-09-25

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-98002?

CVE-2026-98002 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 7.0 onward and has been patched in 7.2.7 and 7.3-rc3. CVE-2026-98002 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-98002?

CVE-2026-98002 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:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
Is there a patch available for CVE-2026-98002?

Yes. CVE-2026-98002 has been patched. Fixed versions include 7.2.7 and 7.3-rc3. If you are running Linux kernel 7.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-98002 actively exploited?

No. CVE-2026-98002 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.