{"id":"CVE-2026-98935","aliases":[],"cve":{"records":[{"id":"CVE-2026-98935","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:25:14.381Z","published":"2026-10-23T12:11:46.041Z","modified":"2026-10-30T12:40:24.910Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:40:24.910Z"}],"references":[{"url":"https://git.kernel.org/stable/c/f84eb9b7b0feeb267a174237d70a857042ce0158","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/beda3c9730ad3087d01aa1d0415c40942042ec87","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/00dc50cede96738dadc64b20e671186cddb8a58d","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/2838d7bbb551861c25187dfb581ed6e7a56762e9","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/0ee5c5d804d592a8328a425b9274487d393d3a05","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"7.3"}]}]}]}],"prioritization":[]},"title":"rtc: dev: zero-initialize struct rtc_wkalrm to prevent information leak","titleSource":"Linux","descriptionSource":"Linux","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: dev: zero-initialize struct rtc_wkalrm to prevent information leak\n\nThe struct rtc_wkalrm has padding holes after the 'pending' member.\nWhen returned to userspace via the RTC_WKALRM_RD ioctl, uninitialized\nkernel stack data residing in these holes may be leaked.\n\nZero-initialize the struct at declaration to eliminate this information\nleak risk.\n\nFixes smatch warnings:\n- drivers/rtc/dev.c:392 rtc_dev_ioctl() warn: check that 'alarm' doesn't\n  leak information (struct has a hole after 'pending')","score":null,"severity":"unknown","published":"2026-10-23T12:11:46.041Z","modified":"2026-10-30T12:40:24.910Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62","status":"affected","lessThan":"f84eb9b7b0feeb267a174237d70a857042ce0158","versionType":"git"},{"version":"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62","status":"affected","lessThan":"a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb","versionType":"git"},{"version":"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62","status":"affected","lessThan":"beda3c9730ad3087d01aa1d0415c40942042ec87","versionType":"git"},{"version":"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62","status":"affected","lessThan":"00dc50cede96738dadc64b20e671186cddb8a58d","versionType":"git"},{"version":"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62","status":"affected","lessThan":"2838d7bbb551861c25187dfb581ed6e7a56762e9","versionType":"git"},{"version":"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62","status":"affected","lessThan":"0ee5c5d804d592a8328a425b9274487d393d3a05","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-98935"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"5.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.0","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-98935"}],"remediation":[],"references":["https://git.kernel.org/stable/c/f84eb9b7b0feeb267a174237d70a857042ce0158","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"],"sources":[{"name":"CVE","id":"CVE-2026-98935","modified":"2026-10-30T12:40:24.910Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-98935"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-10-30T13:10:06.214Z","kev":{"status":"not-listed","checkedAt":"2026-11-14T21:25:33.720Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"The Linux kernel's struct rtc_wkalrm has padding holes that may leak uninitialized kernel stack data to userspace via the RTC_WKALRM_RD ioctl. The vulnerability is addressed by zero-initializing the struct. Affected versions are Linux kernel 5.0 and later, before versions 6.1.191, 6.6.160, 6.12.113, 6.18.56, and 7.2.10.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T14:46:39.638Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-98935"}]}}