{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98935","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.381Z","datePublished":"2026-10-23T12:11:46.041Z","dateUpdated":"2026-10-30T12:40:24.910Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-30T12:40:24.910Z"},"descriptions":[{"lang":"en","value":"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')"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/rtc/dev.c"],"versions":[{"version":"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62","lessThan":"f84eb9b7b0feeb267a174237d70a857042ce0158","status":"affected","versionType":"git"},{"version":"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62","lessThan":"a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb","status":"affected","versionType":"git"},{"version":"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62","lessThan":"beda3c9730ad3087d01aa1d0415c40942042ec87","status":"affected","versionType":"git"},{"version":"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62","lessThan":"00dc50cede96738dadc64b20e671186cddb8a58d","status":"affected","versionType":"git"},{"version":"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62","lessThan":"2838d7bbb551861c25187dfb581ed6e7a56762e9","status":"affected","versionType":"git"},{"version":"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62","lessThan":"0ee5c5d804d592a8328a425b9274487d393d3a05","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/rtc/dev.c"],"versions":[{"version":"5.0","status":"affected"},{"version":"0","lessThan":"5.0","status":"unaffected","versionType":"semver"},{"version":"6.1.191","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.56","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.10","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"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"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/f84eb9b7b0feeb267a174237d70a857042ce0158"},{"url":"https://git.kernel.org/stable/c/a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb"},{"url":"https://git.kernel.org/stable/c/beda3c9730ad3087d01aa1d0415c40942042ec87"},{"url":"https://git.kernel.org/stable/c/00dc50cede96738dadc64b20e671186cddb8a58d"},{"url":"https://git.kernel.org/stable/c/2838d7bbb551861c25187dfb581ed6e7a56762e9"},{"url":"https://git.kernel.org/stable/c/0ee5c5d804d592a8328a425b9274487d393d3a05"}],"title":"rtc: dev: zero-initialize struct rtc_wkalrm to prevent information leak","x_generator":{"engine":"bippy-1.2.0"}}}}