CVE-2024-35887
EPSS
0.04 % (16th)
Advisories
15
NVD Status
Awaiting Analysis
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.
- CVE Status
- PUBLISHED
- NVD Status
- Awaiting Analysis
- CNA
- kernel.org
- Published Date
-
2024-05-19 09:15:09
(4 months ago) - Updated Date
-
2024-05-20 13:00:04
(3 months ago)
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