What is CVE-2026-98121?

CVE-2026-98121 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 5.14 onward and patched in 5.15.222, 6.1.189, 6.6.158 and others. CVE-2026-98121 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-98121?

CVE-2026-98121 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-98121?

Yes, CVE-2026-98121 has been patched. Fixed versions include 5.15.222, 6.1.189, 6.6.158 and others. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-98121 actively exploited?

CVE-2026-98121 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-98121

In the Linux kernel, the following vulnerability has been resolved: watchdog: msc313e: Fix NULL pointer dereference in PM callbacks msc313e_wdt_probe() doesn't set the driver data for the platform device. As a result, dev_get_drvdata() in msc313e_wdt_suspend() and msc313e_wdt_resume() will return NULL, leading to a NULL pointer dereference afterward. Set the platform device driver data in msc313e_wdt_probe().

Package Linux Kernel

Published 2026-09-25

Last modified 2026-10-03

Patch available

Yes

Affected versions

Linux kernel versions 5.14 and later are affected. Fixed in 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2.7, 7.3-rc3 and their respective stable series.

Affected from

≥ 5.14

Fixed in

✓ 5.15.222 5.15.x ✓ 6.1.189 6.1.x ✓ 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

7 total

Showing 5 of 7 references View all on NVD

Frequently asked questions

What is CVE-2026-98121?

CVE-2026-98121 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.14 onward and has been patched in 5.15.222, 6.1.189, 6.6.158 and others. CVE-2026-98121 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-98121?

Yes. CVE-2026-98121 has been patched. Fixed versions include 5.15.222, 6.1.189, 6.6.158 and others. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-98121 actively exploited?

No. CVE-2026-98121 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.