Описание
In the Linux kernel before 5.1.6, there is a use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c.
A flaw was found in the Linux kernel’s infrared serial module. An attacker could use this flaw to corrupt memory and possibly escalate privileges.
Меры по смягчению последствий
As the module will be auto-loaded when the relevant hardware is required, its use can be disabled by preventing the module from loading with the following instructions:
echo "install serial_ir /bin/true" >> /etc/modprobe.d/disable-serial-ir.conf
The system will need to be restarted if the CIFS modules are loaded. In most circumstances, the CIFS kernel modules will be unable to be unloaded while any network interfaces are active and the protocol 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 | Not affected | ||
| Red Hat Enterprise Linux 6 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel-alt | Will not fix | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | ||
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected | ||
| Red Hat Enterprise Linux 8 | kernel-rt | Fixed | RHSA-2020:4609 | 04.11.2020 |
| Red Hat Enterprise Linux 8 | kernel | Fixed | RHSA-2020:4431 | 04.11.2020 |
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Дополнительная информация
Статус:
EPSS
6.7 Medium
CVSS3
Связанные уязвимости
In the Linux kernel before 5.1.6, there is a use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c.
In the Linux kernel before 5.1.6, there is a use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c.
In the Linux kernel before 5.1.6, there is a use-after-free in serial_ ...
In the Linux kernel before 5.1.6, there is a use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c.
Уязвимость функции serial_ir_init_module() (drivers/media/rc/serial_ir.c) ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на целостность, конфиденциальность и доступность защищаемой информации
EPSS
6.7 Medium
CVSS3