UNKNOWN NVD
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_wka
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')
References
- https://git.kernel.org/stable/c/00dc50cede96738dadc64b20e671186cddb8a58d
- https://git.kernel.org/stable/c/0ee5c5d804d592a8328a425b9274487d393d3a05
- https://git.kernel.org/stable/c/2838d7bbb551861c25187dfb581ed6e7a56762e9
- https://git.kernel.org/stable/c/a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb
- https://git.kernel.org/stable/c/beda3c9730ad3087d01aa1d0415c40942042ec87
This unknown severity vulnerability was published on 2026-10-23 via NVD.
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