CVE-2024-56739

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

rtc: check if __rtc_read_time was successful in rtc_timer_do_work()

If the __rtc_read_time call fails,, the struct rtc_time tm; may contain uninitialized data, or an illegal date/time read from the RTC hardware.

When calling rtc_tm_to_ktime later, the result may be a very large value (possibly KTIME_MAX). If there are periodic timers in rtc->timerqueue, they will continually expire, may causing kernel softlockup.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-908

Affected software

VendorProductVersions
LinuxLinux>= 6610e0893b8bc6f59b14fed7f089c5997f035f88, < 39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f; >= 6610e0893b8bc6f59b14fed7f089c5997f035f88, < 44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2; >= 6610e0893b8bc6f59b14fed7f089c5997f035f88, < 0d68e8514d9040108ff7d1b37ca71096674b6efe; >= 6610e0893b8bc6f59b14fed7f089c5997f035f88, < 246f621d363988e7040f4546d20203dc713fa3e1; >= 6610e0893b8bc6f59b14fed7f089c5997f035f88, < fde56535505dde3336df438e949ef4742b6d6d6e; >= 6610e0893b8bc6f59b14fed7f089c5997f035f88, < dd4b1cbcc916fad5d10c2662b62def9f05e453d4; >= 6610e0893b8bc6f59b14fed7f089c5997f035f88, < a1f0b4af90cc18b10261ecde56c6a56b22c75bd1; >= 6610e0893b8bc6f59b14fed7f089c5997f035f88, < e77bce0a8c3989b4173c36f4195122bca8f4a3e1; >= 6610e0893b8bc6f59b14fed7f089c5997f035f88, < e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d
LinuxLinux2.6.38

References

Timeline

Published
Dec 29, 2024
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2024-56739: Medium severity, CVSS 5.5 | Vulnix