CVE-2023-52509
Description
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().
How to fix
- linux linux_kernel5.4.259, 5.10.199, 5.15.136, 6.1.59, 6.5.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.2 ≤ v < 5.4.259, 5.5 ≤ v < 5.10.199, 5.11 ≤ v < 5.15.136, 5.16 ≤ v < 6.1.59, 6.2 ≤ v < 6.5.8, 6.6 | 5.4.259, 5.10.199, 5.15.136, 6.1.59, 6.5.8 |
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