CVE-2026-98935rtc: dev: zero-initialize struct rtc_wkalrm to prevent information leak
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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')
Timeline
ID reserved
By Linux
- 28 days later
· 28 days later
Published
- 7 days later
· 7 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 88% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 – < f84eb9b7b0feeb267a174237d70a857042ce0158
- affected 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 – < a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb
- affected 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 – < beda3c9730ad3087d01aa1d0415c40942042ec87
- affected 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 – < 00dc50cede96738dadc64b20e671186cddb8a58d
- affected 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 – < 2838d7bbb551861c25187dfb581ed6e7a56762e9
- affected 36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62 – < 0ee5c5d804d592a8328a425b9274487d393d3a05
- affected 5.0
- unaffected < 5.0
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.18.56 – ≤ 6.18.*
- unaffected 7.2.10 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References6
- https://git.kernel.org/stable/c/f84eb9b7b0feeb267a174237d70a857042ce0158 (opens in a new tab)
- https://git.kernel.org/stable/c/a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb (opens in a new tab)
- https://git.kernel.org/stable/c/beda3c9730ad3087d01aa1d0415c40942042ec87 (opens in a new tab)
- https://git.kernel.org/stable/c/00dc50cede96738dadc64b20e671186cddb8a58d (opens in a new tab)
- https://git.kernel.org/stable/c/2838d7bbb551861c25187dfb581ed6e7a56762e9 (opens in a new tab)
- https://git.kernel.org/stable/c/0ee5c5d804d592a8328a425b9274487d393d3a05 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-108907 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98935)Record last updated .