CVE-2024-56739

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-56739
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0d68e8514d9040108ff7d1b37ca71096674b6efe Patch
https://git.kernel.org/stable/c/246f621d363988e7040f4546d20203dc713fa3e1 Patch
https://git.kernel.org/stable/c/39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f Patch
https://git.kernel.org/stable/c/44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2 Patch
https://git.kernel.org/stable/c/a1f0b4af90cc18b10261ecde56c6a56b22c75bd1 Patch
https://git.kernel.org/stable/c/dd4b1cbcc916fad5d10c2662b62def9f05e453d4 Patch
https://git.kernel.org/stable/c/e77bce0a8c3989b4173c36f4195122bca8f4a3e1 Patch
https://git.kernel.org/stable/c/e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d Patch
https://git.kernel.org/stable/c/fde56535505dde3336df438e949ef4742b6d6d6e Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

07 Jan 2025, 21:21

Type Values Removed Values Added
CWE CWE-908
References () https://git.kernel.org/stable/c/0d68e8514d9040108ff7d1b37ca71096674b6efe - () https://git.kernel.org/stable/c/0d68e8514d9040108ff7d1b37ca71096674b6efe - Patch
References () https://git.kernel.org/stable/c/246f621d363988e7040f4546d20203dc713fa3e1 - () https://git.kernel.org/stable/c/246f621d363988e7040f4546d20203dc713fa3e1 - Patch
References () https://git.kernel.org/stable/c/39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f - () https://git.kernel.org/stable/c/39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f - Patch
References () https://git.kernel.org/stable/c/44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2 - () https://git.kernel.org/stable/c/44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2 - Patch
References () https://git.kernel.org/stable/c/a1f0b4af90cc18b10261ecde56c6a56b22c75bd1 - () https://git.kernel.org/stable/c/a1f0b4af90cc18b10261ecde56c6a56b22c75bd1 - Patch
References () https://git.kernel.org/stable/c/dd4b1cbcc916fad5d10c2662b62def9f05e453d4 - () https://git.kernel.org/stable/c/dd4b1cbcc916fad5d10c2662b62def9f05e453d4 - Patch
References () https://git.kernel.org/stable/c/e77bce0a8c3989b4173c36f4195122bca8f4a3e1 - () https://git.kernel.org/stable/c/e77bce0a8c3989b4173c36f4195122bca8f4a3e1 - Patch
References () https://git.kernel.org/stable/c/e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d - () https://git.kernel.org/stable/c/e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d - Patch
References () https://git.kernel.org/stable/c/fde56535505dde3336df438e949ef4742b6d6d6e - () https://git.kernel.org/stable/c/fde56535505dde3336df438e949ef4742b6d6d6e - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rtc: comprobar si __rtc_read_time se ha ejecutado correctamente en rtc_timer_do_work() Si la llamada a __rtc_read_time falla, la estructura rtc_time tm; puede contener datos no inicializados o una fecha/hora ilegal leída desde el hardware RTC. Al llamar a rtc_tm_to_ktime más tarde, el resultado puede ser un valor muy grande (posiblemente KTIME_MAX). Si hay temporizadores periódicos en rtc->timerqueue, expirarán continuamente, lo que puede provocar un bloqueo suave del kernel.
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

29 Dec 2024, 12:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-12-29 12:15

Updated : 2025-01-07 21:21

NVD link : CVE-2024-56739

Mitre link : CVE-2024-56739

CVE.ORG link : CVE-2024-56739

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-908

Use of Uninitialized Resource