CVE-2024-35887
ax25: fix use-after-free bugs caused by ax25_ds_del_timer
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ax25: corrige errores de use after free causados por ax25_ds_del_timer Cuando el dispositivo ax25 se está desconectando, ax25_dev_device_down() llama a ax25_ds_del_timer() para limpiar el Slave_timer. Cuando el controlador del temporizador se está ejecutando, el ax25_ds_del_timer() que llama a del_timer() regresará directamente. Como resultado, podrían ocurrir errores de uso después de la liberación, uno de los escenarios se muestra a continuación: (Subproceso 1) | (Hilo 2) | ax25_ds_timeout() ax25_dev_device_down() | ax25_ds_del_timer() | del_timer() | ax25_dev_put() //GRATIS | | ax25_dev-> //USE Para mitigar errores, cuando el dispositivo se esté desconectando, use timer_shutdown_sync() para detener el temporizador.
CVSS Scores
SSVC
- Decision:Track*
Timeline
- 2024-05-17 CVE Reserved
- 2024-05-19 CVE Published
- 2024-05-20 EPSS Updated
- 2024-11-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (4)
URL | Tag | Source |
---|---|---|
https://git.kernel.org/stable/c/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | Vuln. Introduced |
URL | Date | SRC |
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URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 6.6.26 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 6.6.26" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 6.8.5 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 6.8.5" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.12 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 6.9" | en |
Affected
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