CVE-2024-44997

In the Linux kernel, the following vulnerability has been resolved:

net: ethernet: mtk_wed: fix use-after-free panic in mtk_wed_setup_tc_block_cb()

When there are multiple ap interfaces on one band and with WED on,

turning the interface down will cause a kernel panic on MT798X.

Previously, cb_priv was freed in mtk_wed_setup_tc_block() without

marking NULL,and mtk_wed_setup_tc_block_cb() didn't check the value, too.

Assign NULL after free cb_priv in mtk_wed_setup_tc_block() and check NULL

in mtk_wed_setup_tc_block_cb().

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Unable to handle kernel paging request at virtual address 0072460bca32b4f5

Call trace:

mtk_wed_setup_tc_block_cb+0x4/0x38

0xffffffc0794084bc

tcf_block_playback_offloads+0x70/0x1e8

tcf_block_unbind+0x6c/0xc8

...

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