CVE-2026-98935Published

rtc: dev: zero-initialize struct rtc_wkalrm to prevent information leak

Exact source revision recorded 23 Oct 2026 16:01:20 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-98935

Published

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')

Source published: 23 Oct 2026 12:11:46 UTC
Source modified: 23 Oct 2026 12:11:46 UTC
Observed here: 23 Oct 2026 16:01:20 UTC
Source terms: CVE Program Terms of Use

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