CVE-2024-35887

In the Linux kernel, the following vulnerability has been resolved: ax25: fix use-after-free bugs caused by ax25_ds_del_timer When the ax25 device is detaching, the ax25_dev_device_down() calls ax25_ds_del_timer() to cleanup the slave_timer. When the timer handler is running, the ax25_ds_del_timer() that calls del_timer() in it will return directly. As a result, the use-after-free bugs could happen, one of the scenarios is shown below: (Thread 1) | (Thread 2) | ax25_ds_timeout() ax25_dev_device_down() | ax25_ds_del_timer() | del_timer() | ax25_dev_put() //FREE | | ax25_dev-> //USE In order to mitigate bugs, when the device is detaching, use timer_shutdown_sync() to stop the timer.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19b	Patch
https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9	Patch
https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89	Patch
https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19b	Patch
https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9	Patch
https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89	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:6.9:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.9:rc2::::::

History

No history.

Information

Published : 2024-05-19 09:15

Updated : 2024-12-31 18:48

NVD link : CVE-2024-35887

Mitre link : CVE-2024-35887

CVE.ORG link : CVE-2024-35887

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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