| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-44997: net: ethernet: mtk_wed: fix use-after-free panic in mtk_wed_setup_tc_block_cb() |
| |
| 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 |
| ... |
| --------- |
| |
| The Linux kernel CVE team has assigned CVE-2024-44997 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.2 with commit 799684448e3e1f57257a6155541e53510488f67b and fixed in 6.6.48 with commit 326a89321f9d5fe399fe6f9ff7c0fc766582a6a0 |
| Issue introduced in 6.2 with commit 799684448e3e1f57257a6155541e53510488f67b and fixed in 6.10.7 with commit b453a4bbda03aa8741279c360ac82d1c3ac33548 |
| Issue introduced in 6.2 with commit 799684448e3e1f57257a6155541e53510488f67b and fixed in 6.11 with commit db1b4bedb9b97c6d34b03d03815147c04fffe8b4 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-44997 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/net/ethernet/mediatek/mtk_wed.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/326a89321f9d5fe399fe6f9ff7c0fc766582a6a0 |
| https://git.kernel.org/stable/c/b453a4bbda03aa8741279c360ac82d1c3ac33548 |
| https://git.kernel.org/stable/c/db1b4bedb9b97c6d34b03d03815147c04fffe8b4 |
