NetSight
IP …
medium5.5

CVE-2023-52567

In the Linux kernel, the following vulnerability has been resolved: serial: 8250_port: Check IRQ data before use In case the leaf driver wants to use IRQ polli…

Impact

In the Linux kernel, the following vulnerability has been resolved: serial: 8250_port: Check IRQ data before use In case the leaf driver wants to use IRQ polling (irq = 0) and IIR register shows that an interrupt happened in the 8250 hardware the IRQ data can be NULL. In such a case we need to skip the wake event as we came to this path from the timer interrupt and quite likely system is already awake. Without this fix we have got an Oops: serial8250: ttyS0 at I/O 0x3f8 (irq = 0, base_baud = 115200) is a 16550A ... BUG: kernel NULL pointer dereference, address: 0000000000000010 RIP: 0010:serial8250_handle_irq+0x7c/0x240 Call Trace: ? serial8250_handle_irq+0x7c/0x240 ? __pfx_serial8250_timeout+0x10/0x10

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 4.14.315 before 4.14.327
from 4.19.283 before 4.19.296
from 5.4.243 before 5.4.258
from 5.10.180 before 5.10.198
from 5.15.111 before 5.15.134
from 6.1.28 before 6.1.56

Weakness classification

CWE-476

References