CVE-2024-44997

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

State: Published
Severity: 7.8 High
Published: Sep 4, 2024
Updated: Aug 5, 2026
Reserved: Aug 21, 2024

Description

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().

---------- 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 ... ---------

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	799684448e3e1f57257a6155541e53510488f67b to before 326a89321f9d5fe399fe6f9ff7c0fc766582a6a0Affected 799684448e3e1f57257a6155541e53510488f67b to before b453a4bbda03aa8741279c360ac82d1c3ac33548Affected 799684448e3e1f57257a6155541e53510488f67b to before db1b4bedb9b97c6d34b03d03815147c04fffe8b4Affected
LinuxLinux	6.2Affected before 6.2Not affected 6.6.48 through 6.6.Not affected 6.10.7 through 6.10.Not affected 6.11 and laterNot affected

References

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