What is CVE-2026-98051?

CVE-2026-98051 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.6 onward and patched in 6.6.158, 6.12.111, 6.18.53 and others. CVE-2026-98051 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-98051?

CVE-2026-98051 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-98051?

Yes, CVE-2026-98051 has been patched. Fixed versions include 6.6.158, 6.12.111, 6.18.53 and others. If you are running Linux kernel 6.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-98051 actively exploited?

CVE-2026-98051 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-98051

Medium

In the Linux kernel, the following vulnerability has been resolved: net: bcmasp: fix tx_spb_ring_full() checking same slot cnt times The loop initialised next_index from intf->tx_spb_index on every iteration, so incr_ring() always produced the same result and only one slot was ever tested. Move the initialisation before the loop so each iteration advances next_index and the function correctly checks that cnt consecutive descriptor slots are available before allowing a new transmission.

Package Linux Kernel

Published 2026-09-25

Last modified 2026-10-06

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-670

CVE-2026-98051 is classified as CWE-670

See CWE-670 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.6 and later are affected. Fixed in 6.6.158, 6.12.111, 6.18.53, 7.2.7, 7.3-rc3 and their respective stable series.

Affected from

≥ 6.6

Fixed in

✓ 6.6.158 6.6.x ✓ 6.12.111 6.12.x ✓ 6.18.53 6.18.x ✓ 7.2.7 7.2.x ✓ 7.3-rc3

References

5 total

Kernel Git
https://git.kernel.org/stable/c/0c5cf62e72d7a666ee4da757e122dc1600df1ecc

Patch
Kernel Git
https://git.kernel.org/stable/c/5df7ecd302488287665ab9767bacba7ed7e2842f

Patch
Kernel Git
https://git.kernel.org/stable/c/990df1ba4d0805d1e7f6148c364febd2ab618766

Patch
Kernel Git
https://git.kernel.org/stable/c/a8bddab54aa68b407f12294acb05bd552fb6a492

Patch
Kernel Git
https://git.kernel.org/stable/c/f7f7a16dd46ace4e221336a184c7806f7de19547

Patch

Details

CVE ID CVE-2026-98051

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-09-25

Modified 2026-10-06

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-98051?

CVE-2026-98051 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.6 onward and has been patched in 6.6.158, 6.12.111, 6.18.53 and others. CVE-2026-98051 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-98051?

CVE-2026-98051 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-98051?

Yes. CVE-2026-98051 has been patched. Fixed versions include 6.6.158, 6.12.111, 6.18.53 and others. If you are running Linux kernel 6.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-98051 actively exploited?

No. CVE-2026-98051 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.