| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2023-53079: net/mlx5: Fix steering rules cleanup |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net/mlx5: Fix steering rules cleanup |
| |
| vport's mc, uc and multicast rules are not deleted in teardown path when |
| EEH happens. Since the vport's promisc settings(uc, mc and all) in |
| firmware are reset after EEH, mlx5 driver will try to delete the above |
| rules in the initialization path. This cause kernel crash because these |
| software rules are no longer valid. |
| |
| Fix by nullifying these rules right after delete to avoid accessing any dangling |
| pointers. |
| |
| Call Trace: |
| __list_del_entry_valid+0xcc/0x100 (unreliable) |
| tree_put_node+0xf4/0x1b0 [mlx5_core] |
| tree_remove_node+0x30/0x70 [mlx5_core] |
| mlx5_del_flow_rules+0x14c/0x1f0 [mlx5_core] |
| esw_apply_vport_rx_mode+0x10c/0x200 [mlx5_core] |
| esw_update_vport_rx_mode+0xb4/0x180 [mlx5_core] |
| esw_vport_change_handle_locked+0x1ec/0x230 [mlx5_core] |
| esw_enable_vport+0x130/0x260 [mlx5_core] |
| mlx5_eswitch_enable_sriov+0x2a0/0x2f0 [mlx5_core] |
| mlx5_device_enable_sriov+0x74/0x440 [mlx5_core] |
| mlx5_load_one+0x114c/0x1550 [mlx5_core] |
| mlx5_pci_resume+0x68/0xf0 [mlx5_core] |
| eeh_report_resume+0x1a4/0x230 |
| eeh_pe_dev_traverse+0x98/0x170 |
| eeh_handle_normal_event+0x3e4/0x640 |
| eeh_handle_event+0x4c/0x370 |
| eeh_event_handler+0x14c/0x210 |
| kthread+0x168/0x1b0 |
| ret_from_kernel_thread+0x5c/0x84 |
| |
| The Linux kernel CVE team has assigned CVE-2023-53079 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.7 with commit a35f71f27a614aff106cc89b86168962bce2725f and fixed in 5.10.177 with commit 18cead61e437f4c7898acca0a5f3df12f801d97f |
| Issue introduced in 4.7 with commit a35f71f27a614aff106cc89b86168962bce2725f and fixed in 5.15.105 with commit 4df1f2d36bdc9a368650bf14b9097c555e95f71d |
| Issue introduced in 4.7 with commit a35f71f27a614aff106cc89b86168962bce2725f and fixed in 6.1.22 with commit 63546395a0e6ac264f78f65218086ce6014b4494 |
| Issue introduced in 4.7 with commit a35f71f27a614aff106cc89b86168962bce2725f and fixed in 6.2.9 with commit 6f5780536181d1d0d09a11a1bc92f22e143447e2 |
| Issue introduced in 4.7 with commit a35f71f27a614aff106cc89b86168962bce2725f and fixed in 6.3 with commit 922f56e9a795d6f3dd72d3428ebdd7ee040fa855 |
| |
| 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-2023-53079 |
| 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/mellanox/mlx5/core/eswitch.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/18cead61e437f4c7898acca0a5f3df12f801d97f |
| https://git.kernel.org/stable/c/4df1f2d36bdc9a368650bf14b9097c555e95f71d |
| https://git.kernel.org/stable/c/63546395a0e6ac264f78f65218086ce6014b4494 |
| https://git.kernel.org/stable/c/6f5780536181d1d0d09a11a1bc92f22e143447e2 |
| https://git.kernel.org/stable/c/922f56e9a795d6f3dd72d3428ebdd7ee040fa855 |
