CVE-2022-49725 Information

Description

In the Linux kernel the following vulnerability has been resolved:

i40e: Fix call trace in setup_tx_descriptors

After PF reset and ethtool -t there was call trace in dmesg sometimes leading to panic. When there was some time around 5 seconds between reset and test there were no errors.

Problem was that pf reset calls i40e_vsi_close in prep_for_reset and ethtool -t calls i40e_vsi_close in diag_test. If there was not enough time between those commands the second i40e_vsi_close starts before previous i40e_vsi_close was done which leads to crash.

Add check to diag_test if pf is in reset and don’t start offline tests if it is true. Add netif_info( esting failed) into unhappy path of i40e_diag_test()

Reference

https://git.kernel.org/stable/c/0a4e5a3dc5e41212870e6043895ae02455c93f63 https://git.kernel.org/stable/c/15950157e2c24865b696db1c9ccc72743ae0e967 https://git.kernel.org/stable/c/322271351b0e41565171e4cce70ea41854fac115 https://git.kernel.org/stable/c/5ba9956ca57e361fb13ea369bb753eb33177acc7 https://git.kernel.org/stable/c/814092927a215f5ca6c08249ec72a205e0b473cd https://git.kernel.org/stable/c/fd5855e6b1358e816710afee68a1d2bc685176ca https://git.kernel.org/stable/c/ff6e03fe84bc917bb0c907d02de668c2fe101712