Описание
An issue was discovered in the Linux kernel before 5.2.6. There is a use-after-free caused by a malicious USB device in the drivers/media/usb/cpia2/cpia2_usb.c driver.
A use-after-free vulnerability was found in the Linux kernel's cpia2_usb driver. An attacker must have physical access to the system to utilize a malicious USB device to trigger the disconnect() functionality which is required to trigger this flaw. A local account is also required to take advantage of the use-after-free memory condition. System availability is the highest threat from this vulnerability.
Меры по смягчению последствий
As the cpia2 module will be auto-loaded when required, its use can be disabled by preventing the module from loading with the following instructions:
echo "install cpia2 /bin/true" >> /etc/modprobe.d/disable-cpia2.conf
The system will need to be restarted if the cpia2 modules are loaded. In most circumstances, the cpia2 kernel modules will be unable to be unloaded while the hardware is in use. If the system requires this module to work correctly, this mitigation may not be suitable. If you need further assistance, see KCS article https://access.redhat.com/solutions/41278 or contact Red Hat Global Support Services.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Out of support scope | ||
| Red Hat Enterprise Linux 6 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel-alt | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | ||
| Red Hat Enterprise Linux 8 | kernel | Not affected | ||
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | ||
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected |
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Дополнительная информация
Статус:
EPSS
4.6 Medium
CVSS3
Связанные уязвимости
An issue was discovered in the Linux kernel before 5.2.6. There is a use-after-free caused by a malicious USB device in the drivers/media/usb/cpia2/cpia2_usb.c driver.
An issue was discovered in the Linux kernel before 5.2.6. There is a use-after-free caused by a malicious USB device in the drivers/media/usb/cpia2/cpia2_usb.c driver.
An issue was discovered in the Linux kernel before 5.2.6. There is a u ...
An issue was discovered in the Linux kernel before 5.2.6. There is a use-after-free caused by a malicious USB device in the drivers/media/usb/cpia2/cpia2_usb.c driver.
Уязвимость драйвера drivers/media/usb/cpia2/cpia2_usb.c ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
4.6 Medium
CVSS3