CVE-2023-53079
net/mlx5: Fix steering rules cleanup
Reported by linux · Published May 2, 2025
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 This cause kernel crash because these software rules are no longer valid.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
EPSS 0.22% · 11.9th percentile
Fixed versions
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| Package | Ecosystem | Fixed in |
|---|---|---|
| linux_kernel | linux | 6.2.9, 6.1.22, 5.15.105, 5.10.177 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | a35f71f27a614aff106cc89b86168962bce2725f, a35f71f27a614aff106cc89b86168962bce2725f, a35f71f27a614aff106cc89b86168962bce2725f |
| Linux | Linux | 4.7, 0, 5.10.177 |
| linux | linux_kernel | 4.7, 4.7, 4.7 |
| Linux | Linux | *, *, * |
Timeline
- May 2, 2025 CVE Published
- May 3, 2025 EPSS Score (30 in total, the first dated here)
- May 30, 2025 Coalition ESS Score (7 in total, the first dated here)
- Jan 25, 2026 Security Advisory
- Jan 25, 2026 CVE Updated
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