cve-2024-35887
Vulnerability from cvelistv5
Published
2024-05-19 08:34
Modified
2024-08-02 03:21
Severity
Summary
ax25: fix use-after-free bugs caused by ax25_ds_del_timer
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nax25: fix use-after-free bugs caused by ax25_ds_del_timer\n\nWhen the ax25 device is detaching, the ax25_dev_device_down()\ncalls ax25_ds_del_timer() to cleanup the slave_timer. When\nthe timer handler is running, the ax25_ds_del_timer() that\ncalls del_timer() in it will return directly. As a result,\nthe use-after-free bugs could happen, one of the scenarios\nis shown below:\n\n      (Thread 1)          |      (Thread 2)\n                          | ax25_ds_timeout()\nax25_dev_device_down()    |\n  ax25_ds_del_timer()     |\n    del_timer()           |\n  ax25_dev_put() //FREE   |\n                          |  ax25_dev-\u003e //USE\n\nIn order to mitigate bugs, when the device is detaching, use\ntimer_shutdown_sync() to stop the timer."
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-35887\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-19T09:15:09.837\",\"lastModified\":\"2024-05-20T13:00:04.957\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nax25: fix use-after-free bugs caused by ax25_ds_del_timer\\n\\nWhen the ax25 device is detaching, the ax25_dev_device_down()\\ncalls ax25_ds_del_timer() to cleanup the slave_timer. When\\nthe timer handler is running, the ax25_ds_del_timer() that\\ncalls del_timer() in it will return directly. As a result,\\nthe use-after-free bugs could happen, one of the scenarios\\nis shown below:\\n\\n      (Thread 1)          |      (Thread 2)\\n                          | ax25_ds_timeout()\\nax25_dev_device_down()    |\\n  ax25_ds_del_timer()     |\\n    del_timer()           |\\n  ax25_dev_put() //FREE   |\\n                          |  ax25_dev-\u003e //USE\\n\\nIn order to mitigate bugs, when the device is detaching, use\\ntimer_shutdown_sync() to stop the timer.\"},{\"lang\":\"es\",\"value\":\" En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ax25: corrige errores de use after free causados por ax25_ds_del_timer Cuando el dispositivo ax25 se est\u00e1 desconectando, ax25_dev_device_down() llama a ax25_ds_del_timer() para limpiar el Slave_timer. Cuando el controlador del temporizador se est\u00e1 ejecutando, el ax25_ds_del_timer() que llama a del_timer() regresar\u00e1 directamente. Como resultado, podr\u00edan ocurrir errores de uso despu\u00e9s de la liberaci\u00f3n, uno de los escenarios se muestra a continuaci\u00f3n: (Subproceso 1) | (Hilo 2) | ax25_ds_timeout() ax25_dev_device_down() | ax25_ds_del_timer() | del_timer() | ax25_dev_put() //GRATIS | | ax25_dev-\u0026gt; //USE Para mitigar errores, cuando el dispositivo se est\u00e9 desconectando, use timer_shutdown_sync() para detener el temporizador.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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