CVE-2024-46799 Information

Description

In the Linux kernel the following vulnerability has been resolved:

net: ethernet: ti: am65-cpsw: Fix NULL dereference on XDP_TX

If number of TX queues are set to 1 we get a NULL pointer dereference during XDP_TX.

~ ethtool -L eth0 tx 1 ~ ./xdp-trafficgen udp -A -a eth0 -t 2 Transmitting on eth0 (ifindex 2) [ 241.135257] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000030

Fix this by using actual TX queues instead of max TX queues when picking the TX channel in am65_cpsw_ndo_xdp_xmit().

Reference

https://git.kernel.org/stable/c/2e7189d2b1de51fc2567676cd4f96c0fe0960b9f https://git.kernel.org/stable/c/0a50c35277f96481a5a6ed5faf347f282040c57d