{"id":"CVE-2026-98935","revision":"34be0d6212394722b73d2446f0942465","records":[{"revision":"34be0d6212394722b73d2446f0942465","observedAt":"2026-10-23T16:01:20.601+00:00","statement":{"source":"cve-program","id":"CVE-2026-98935","aliases":[],"title":"rtc: dev: zero-initialize struct rtc_wkalrm to prevent information leak","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')","state":0,"publishedAt":"2026-10-23T12:11:46.041+00:00","modifiedAt":"2026-10-23T12:11:46.041+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/rtc/dev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62\",\n                            \"lessThan\": \"a2215eb3cbbd3d9d73cc18c08e3ef53f903443cb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62\",\n                            \"lessThan\": \"beda3c9730ad3087d01aa1d0415c40942042ec87\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62\",\n                            \"lessThan\": \"00dc50cede96738dadc64b20e671186cddb8a58d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62\",\n                            \"lessThan\": \"2838d7bbb551861c25187dfb581ed6e7a56762e9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62\",\n                            \"lessThan\": \"0ee5c5d804d592a8328a425b9274487d393d3a05\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/rtc/dev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.113\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.56\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.10\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98935","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98935","identifiers":["CVE-2026-98935"]},"retained":false,"historicalAffected":[]}],"coverage":[]}