CVE-2025-39956

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> igc: don&amp;#39;t fail igc_probe() on LED setup error<br /> <br /> When igc_led_setup() fails, igc_probe() fails and triggers kernel panic<br /> in free_netdev() since unregister_netdev() is not called. [1]<br /> This behavior can be tested using fault-injection framework, especially<br /> the failslab feature. [2]<br /> <br /> Since LED support is not mandatory, treat LED setup failures as<br /> non-fatal and continue probe with a warning message, consequently<br /> avoiding the kernel panic.<br /> <br /> [1]<br /> kernel BUG at net/core/dev.c:12047!<br /> Oops: invalid opcode: 0000 [#1] SMP NOPTI<br /> CPU: 0 UID: 0 PID: 937 Comm: repro-igc-led-e Not tainted 6.17.0-rc4-enjuk-tnguy-00865-gc4940196ab02 #64 PREEMPT(voluntary)<br /> Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014<br /> RIP: 0010:free_netdev+0x278/0x2b0<br /> [...]<br /> Call Trace:<br /> <br /> igc_probe+0x370/0x910<br /> local_pci_probe+0x3a/0x80<br /> pci_device_probe+0xd1/0x200<br /> [...]<br /> <br /> [2]<br /> #!/bin/bash -ex<br /> <br /> FAILSLAB_PATH=/sys/kernel/debug/failslab/<br /> DEVICE=0000:00:05.0<br /> START_ADDR=$(grep " igc_led_setup" /proc/kallsyms \<br /> | awk &amp;#39;{printf("0x%s", $1)}&amp;#39;)<br /> END_ADDR=$(printf "0x%x" $((START_ADDR + 0x100)))<br /> <br /> echo $START_ADDR &gt; $FAILSLAB_PATH/require-start<br /> echo $END_ADDR &gt; $FAILSLAB_PATH/require-end<br /> echo 1 &gt; $FAILSLAB_PATH/times<br /> echo 100 &gt; $FAILSLAB_PATH/probability<br /> echo N &gt; $FAILSLAB_PATH/ignore-gfp-wait<br /> <br /> echo $DEVICE &gt; /sys/bus/pci/drivers/igc/bind