CVE-2026-98935
rtc: dev: zero-initialize struct rtc_wkalrm to prevent information leak
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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')
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 23, 2026 |
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Affected Versions
Linux / Linux
36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 < a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 < beda3c9730ad3087d01aa1d0415c40942042ec87 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 < 00dc50cede96738dadc64b20e671186cddb8a58d 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 < 2838d7bbb551861c25187dfb581ed6e7a56762e9 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 < 0ee5c5d804d592a8328a425b9274487d393d3a05
Linux / Linux
5.0
References
git.kernel.org: https://git.kernel.org/stable/c/a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb git.kernel.org: https://git.kernel.org/stable/c/beda3c9730ad3087d01aa1d0415c40942042ec87 git.kernel.org: https://git.kernel.org/stable/c/00dc50cede96738dadc64b20e671186cddb8a58d git.kernel.org: https://git.kernel.org/stable/c/2838d7bbb551861c25187dfb581ed6e7a56762e9 git.kernel.org: https://git.kernel.org/stable/c/0ee5c5d804d592a8328a425b9274487d393d3a05