PT-2026-121907
CVE-2026-98935
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Published
2026-10-23
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Updated
2026-10-23
Description by
Score
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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')
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