Not yet scoredPublished Oct 23, 2026

CVE-2026-98935rtc: dev: zero-initialize struct rtc_wkalrm to prevent information leak

Updated under an hour ago (Oct 26, 2026, 4:40 PM ET)

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Exploited in the last 30 days

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')

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 23, 2026
First seen by InfoSec Signals: Oct 23, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 before a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb; from 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 before beda3c9730ad3087d01aa1d0415c40942042ec87; 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 builds before 00dc50cede96738dadc64b20e671186cddb8a58d; from 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 before 2838d7bbb551861c25187dfb581ed6e7a56762e9; 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 builds before 0ee5c5d804d592a8328a425b9274487d393d3a05	CNA record

References

References

https://git.kernel.org/stable/c/a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb
https://git.kernel.org/stable/c/beda3c9730ad3087d01aa1d0415c40942042ec87
https://git.kernel.org/stable/c/00dc50cede96738dadc64b20e671186cddb8a58d
https://git.kernel.org/stable/c/2838d7bbb551861c25187dfb581ed6e7a56762e9
https://git.kernel.org/stable/c/0ee5c5d804d592a8328a425b9274487d393d3a05

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.