{"id":"CVE-2024-56739","summary":"rtc: check if __rtc_read_time was successful in rtc_timer_do_work()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: check if __rtc_read_time was successful in rtc_timer_do_work()\n\nIf the __rtc_read_time call fails,, the struct rtc_time tm; may contain\nuninitialized data, or an illegal date/time read from the RTC hardware.\n\nWhen calling rtc_tm_to_ktime later, the result may be a very large value\n(possibly KTIME_MAX). If there are periodic timers in rtc-\u003etimerqueue,\nthey will continually expire, may causing kernel softlockup.","modified":"2026-04-02T12:25:14.936539Z","published":"2024-12-29T11:30:08.512Z","related":["ALSA-2025:20518","SUSE-SU-2025:0289-1","SUSE-SU-2025:0428-1","SUSE-SU-2025:0499-1","SUSE-SU-2025:0556-1","SUSE-SU-2025:0557-1","SUSE-SU-2025:0565-1","SUSE-SU-2025:0577-1","SUSE-SU-2025:0577-2","SUSE-SU-2025:20165-1","SUSE-SU-2025:20166-1","SUSE-SU-2025:20248-1","SUSE-SU-2025:20249-1","USN-7276-1","USN-7277-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56739.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0d68e8514d9040108ff7d1b37ca71096674b6efe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/246f621d363988e7040f4546d20203dc713fa3e1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a1f0b4af90cc18b10261ecde56c6a56b22c75bd1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dd4b1cbcc916fad5d10c2662b62def9f05e453d4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e77bce0a8c3989b4173c36f4195122bca8f4a3e1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fde56535505dde3336df438e949ef4742b6d6d6e"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56739.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56739"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6610e0893b8bc6f59b14fed7f089c5997f035f88"},{"fixed":"39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f"},{"fixed":"44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2"},{"fixed":"0d68e8514d9040108ff7d1b37ca71096674b6efe"},{"fixed":"246f621d363988e7040f4546d20203dc713fa3e1"},{"fixed":"fde56535505dde3336df438e949ef4742b6d6d6e"},{"fixed":"dd4b1cbcc916fad5d10c2662b62def9f05e453d4"},{"fixed":"a1f0b4af90cc18b10261ecde56c6a56b22c75bd1"},{"fixed":"e77bce0a8c3989b4173c36f4195122bca8f4a3e1"},{"fixed":"e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-56739.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}