Vulnerability Description
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
- https://git.kernel.org/stable/c/f84eb9b7b0feeb267a174237d70a857042ce0158
FAQ
What is CVE-2026-98935?
CVE-2026-98935 is a documented vulnerability. 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...
How severe is CVE-2026-98935?
CVSS scoring is not yet available for CVE-2026-98935. Check NVD for updates.
Is there a patch for CVE-2026-98935?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.