IT

Tracker / CVE-2023-52567

CVE-2023-52567

Medium 5.5

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 and versions

linux linux_kernel
linux linux_kernel · 4.14.315 → 4.14.327
linux linux_kernel · 4.19.283 → 4.19.296
linux linux_kernel · 5.10.180 → 5.10.198
linux linux_kernel · 5.15.111 → 5.15.134
linux linux_kernel · 5.4.243 → 5.4.258
linux linux_kernel · 6.1.28 → 6.1.56
linux linux_kernel · 6.4 → 6.5.6

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References