CVE-2024-53120

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net/mlx5e: CT: Fix null-ptr-deref in add rule err flow<br /> <br /> In error flow of mlx5_tc_ct_entry_add_rule(), in case ct_rule_add()<br /> callback returns error, zone_rule-&gt;attr is used uninitiated. Fix it to<br /> use attr which has the needed pointer value.<br /> <br /> Kernel log:<br /> BUG: kernel NULL pointer dereference, address: 0000000000000110<br /> RIP: 0010:mlx5_tc_ct_entry_add_rule+0x2b1/0x2f0 [mlx5_core]<br /> …<br /> Call Trace:<br /> <br /> ? __die+0x20/0x70<br /> ? page_fault_oops+0x150/0x3e0<br /> ? exc_page_fault+0x74/0x140<br /> ? asm_exc_page_fault+0x22/0x30<br /> ? mlx5_tc_ct_entry_add_rule+0x2b1/0x2f0 [mlx5_core]<br /> ? mlx5_tc_ct_entry_add_rule+0x1d5/0x2f0 [mlx5_core]<br /> mlx5_tc_ct_block_flow_offload+0xc6a/0xf90 [mlx5_core]<br /> ? nf_flow_offload_tuple+0xd8/0x190 [nf_flow_table]<br /> nf_flow_offload_tuple+0xd8/0x190 [nf_flow_table]<br /> flow_offload_work_handler+0x142/0x320 [nf_flow_table]<br /> ? finish_task_switch.isra.0+0x15b/0x2b0<br /> process_one_work+0x16c/0x320<br /> worker_thread+0x28c/0x3a0<br /> ? __pfx_worker_thread+0x10/0x10<br /> kthread+0xb8/0xf0<br /> ? __pfx_kthread+0x10/0x10<br /> ret_from_fork+0x2d/0x50<br /> ? __pfx_kthread+0x10/0x10<br /> ret_from_fork_asm+0x1a/0x30<br />