CVE-2023-52509

In the Linux kernel, the following vulnerability has been resolved: ravb: Fix use-after-free issue in ravb_tx_timeout_work() The ravb_stop() should call cancel_work_sync(). Otherwise, ravb_tx_timeout_work() is possible to use the freed priv after ravb_remove() was called like below: CPU0 CPU1 ravb_tx_timeout() ravb_remove() unregister_netdev() free_netdev(ndev) // free priv ravb_tx_timeout_work() // use priv unregister_netdev() will call .ndo_stop() so that ravb_stop() is called. And, after phy_stop() is called, netif_carrier_off() is also called. So that .ndo_tx_timeout() will not be called after phy_stop().

• linux linux kernel (>= 4.2 < 5.4.259) • linux linux kernel (>= 5.5 < 5.10.199) • linux linux kernel (>= 5.11 < 5.15.136) • linux linux kernel (>= 5.16 < 6.1.59) • linux linux kernel (>= 6.2 < 6.5.8) • linux linux kernel 6.6