Tracker / CVE-2023-52509
CVE-2023-52509
High 7.8
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().
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 4.2 → 5.4.259 |
| linux | linux_kernel · 5.11 → 5.15.136 |
| linux | linux_kernel · 5.16 → 6.1.59 |
| linux | linux_kernel · 5.5 → 5.10.199 |
| linux | linux_kernel · 6.2 → 6.5.8 |
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.