What is CVE-2026-98935?

CVE-2026-98935 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 5.0 onward and patched in 6.6.160, 6.12.113, 6.18.56 and others. CVE-2026-98935 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-98935?

CVE-2026-98935 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-98935?

Yes, CVE-2026-98935 has been patched. Fixed versions include 6.6.160, 6.12.113, 6.18.56 and others. If you are running Linux kernel 5.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-98935 actively exploited?

CVE-2026-98935 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-98935

In the Linux kernel, the following vulnerability has been resolved: rtc: dev: zero-initialize struct rtc_wkalrm to prevent information leak The struct rtc_wkalrm has padding holes after the 'pending' member. When returned to userspace via the RTC_WKALRM_RD ioctl, uninitialized kernel stack data residing in these holes may be leaked. Zero-initialize the struct at declaration to eliminate this information leak risk. Fixes smatch warnings: - drivers/rtc/dev.c:392 rtc_dev_ioctl() warn: check that 'alarm' doesn't leak information (struct has a hole after 'pending')

Package Linux Kernel

Published 2026-10-23

Last modified 2026-10-23

Patch available

Yes

Affected versions

Linux kernel versions 5.0 and later are affected. Fixed in 6.6.160, 6.12.113, 6.18.56, 7.2.10, 7.3 and their respective stable series.

Affected from

≥ 5.0

Fixed in

✓ 6.6.160 6.6.x ✓ 6.12.113 6.12.x ✓ 6.18.56 6.18.x ✓ 7.2.10 7.2.x ✓ 7.3

References

5 total

Frequently asked questions

What is CVE-2026-98935?

CVE-2026-98935 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.0 onward and has been patched in 6.6.160, 6.12.113, 6.18.56 and others. CVE-2026-98935 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-98935?

Yes. CVE-2026-98935 has been patched. Fixed versions include 6.6.160, 6.12.113, 6.18.56 and others. If you are running Linux kernel 5.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-98935 actively exploited?

No. CVE-2026-98935 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.