CVE-2024-38633 – In the Linux kernel, the following vulnerability h

CVE ID : CVE-2024-38633

Published : June 21, 2024, 11:15 a.m. | 1 hour, 4 minutes ago

Description : In the Linux kernel, the following vulnerability has been resolved:

serial: max3100: Update uart_driver_registered on driver removal

The removal of the last MAX3100 device triggers the removal of
the driver. However, code doesn’t update the respective global
variable and after insmod — rmmod — insmod cycle the kernel
oopses:

max3100 spi-PRP0001:01: max3100_probe: adding port 0
BUG: kernel NULL pointer dereference, address: 0000000000000408

RIP: 0010:serial_core_register_port+0xa0/0x840

max3100_probe+0x1b6/0x280 [max3100]
spi_probe+0x8d/0xb0

Update the actual state so next time UART driver will be registered
again.

Hugo also noticed, that the error path in the probe also affected
by having the variable set, and not cleared. Instead of clearing it
move the assignment after the successfull uart_register_driver() call.

Severity: 0.0 | NA

Visit the link for more details, such as CVSS details, affected products, timeline, and more…CVE ID : CVE-2024-38633

Published : June 21, 2024, 11:15 a.m. | 1 hour, 4 minutes ago

Description : In the Linux kernel, the following vulnerability has been resolved:

serial: max3100: Update uart_driver_registered on driver removal

The removal of the last MAX3100 device triggers the removal of
the driver. However, code doesn’t update the respective global
variable and after insmod — rmmod — insmod cycle the kernel
oopses:

max3100 spi-PRP0001:01: max3100_probe: adding port 0
BUG: kernel NULL pointer dereference, address: 0000000000000408

RIP: 0010:serial_core_register_port+0xa0/0x840

max3100_probe+0x1b6/0x280 [max3100]
spi_probe+0x8d/0xb0

Update the actual state so next time UART driver will be registered
again.

Hugo also noticed, that the error path in the probe also affected
by having the variable set, and not cleared. Instead of clearing it
move the assignment after the successfull uart_register_driver() call.

Severity: 0.0 | NA

Visit the link for more details, such as CVSS details, affected products, timeline, and more…