{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2024-41040", "ASSIGNER": "cve@kernel.org", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: Fix UAF when resolving a clash\n\nKASAN reports the following UAF:\n\n BUG: KASAN: slab-use-after-free in tcf_ct_flow_table_process_conn+0x12b/0x380 [act_ct]\n Read of size 1 at addr ffff888c07603600 by task handler130/6469\n\n Call Trace:\n \n dump_stack_lvl+0x48/0x70\n print_address_description.constprop.0+0x33/0x3d0\n print_report+0xc0/0x2b0\n kasan_report+0xd0/0x120\n __asan_load1+0x6c/0x80\n tcf_ct_flow_table_process_conn+0x12b/0x380 [act_ct]\n tcf_ct_act+0x886/0x1350 [act_ct]\n tcf_action_exec+0xf8/0x1f0\n fl_classify+0x355/0x360 [cls_flower]\n __tcf_classify+0x1fd/0x330\n tcf_classify+0x21c/0x3c0\n sch_handle_ingress.constprop.0+0x2c5/0x500\n __netif_receive_skb_core.constprop.0+0xb25/0x1510\n __netif_receive_skb_list_core+0x220/0x4c0\n netif_receive_skb_list_internal+0x446/0x620\n napi_complete_done+0x157/0x3d0\n gro_cell_poll+0xcf/0x100\n __napi_poll+0x65/0x310\n net_rx_action+0x30c/0x5c0\n __do_softirq+0x14f/0x491\n __irq_exit_rcu+0x82/0xc0\n irq_exit_rcu+0xe/0x20\n common_interrupt+0xa1/0xb0\n \n \n asm_common_interrupt+0x27/0x40\n\n Allocated by task 6469:\n kasan_save_stack+0x38/0x70\n kasan_set_track+0x25/0x40\n kasan_save_alloc_info+0x1e/0x40\n __kasan_krealloc+0x133/0x190\n krealloc+0xaa/0x130\n nf_ct_ext_add+0xed/0x230 [nf_conntrack]\n tcf_ct_act+0x1095/0x1350 [act_ct]\n tcf_action_exec+0xf8/0x1f0\n fl_classify+0x355/0x360 [cls_flower]\n __tcf_classify+0x1fd/0x330\n tcf_classify+0x21c/0x3c0\n sch_handle_ingress.constprop.0+0x2c5/0x500\n __netif_receive_skb_core.constprop.0+0xb25/0x1510\n __netif_receive_skb_list_core+0x220/0x4c0\n netif_receive_skb_list_internal+0x446/0x620\n napi_complete_done+0x157/0x3d0\n gro_cell_poll+0xcf/0x100\n __napi_poll+0x65/0x310\n net_rx_action+0x30c/0x5c0\n __do_softirq+0x14f/0x491\n\n Freed by task 6469:\n kasan_save_stack+0x38/0x70\n kasan_set_track+0x25/0x40\n kasan_save_free_info+0x2b/0x60\n ____kasan_slab_free+0x180/0x1f0\n __kasan_slab_free+0x12/0x30\n slab_free_freelist_hook+0xd2/0x1a0\n __kmem_cache_free+0x1a2/0x2f0\n kfree+0x78/0x120\n nf_conntrack_free+0x74/0x130 [nf_conntrack]\n nf_ct_destroy+0xb2/0x140 [nf_conntrack]\n __nf_ct_resolve_clash+0x529/0x5d0 [nf_conntrack]\n nf_ct_resolve_clash+0xf6/0x490 [nf_conntrack]\n __nf_conntrack_confirm+0x2c6/0x770 [nf_conntrack]\n tcf_ct_act+0x12ad/0x1350 [act_ct]\n tcf_action_exec+0xf8/0x1f0\n fl_classify+0x355/0x360 [cls_flower]\n __tcf_classify+0x1fd/0x330\n tcf_classify+0x21c/0x3c0\n sch_handle_ingress.constprop.0+0x2c5/0x500\n __netif_receive_skb_core.constprop.0+0xb25/0x1510\n __netif_receive_skb_list_core+0x220/0x4c0\n netif_receive_skb_list_internal+0x446/0x620\n napi_complete_done+0x157/0x3d0\n gro_cell_poll+0xcf/0x100\n __napi_poll+0x65/0x310\n net_rx_action+0x30c/0x5c0\n __do_softirq+0x14f/0x491\n\nThe ct may be dropped if a clash has been resolved but is still passed to\nthe tcf_ct_flow_table_process_conn function for further usage. This issue\ncan be fixed by retrieving ct from skb again after confirming conntrack." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Linux", "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "<", "version_name": "f07c54831477", "version_value": "b81a523d54ea" }, { "version_affected": "<", "version_name": "0cc254e5aa37", "version_value": "2b4d68df3f57" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "5.13", "status": "affected" }, { "version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.222", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.163", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.100", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.41", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9.10", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://git.kernel.org/stable/c/b81a523d54ea689414f67c9fb81a5b917a41ed55", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/b81a523d54ea689414f67c9fb81a5b917a41ed55" }, { "url": "https://git.kernel.org/stable/c/2b4d68df3f57ea746c430941ba9c03d7d8b5a23f", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/2b4d68df3f57ea746c430941ba9c03d7d8b5a23f" }, { "url": "https://git.kernel.org/stable/c/4e71b10a100861fb27d9c5755dfd68f615629fae", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/4e71b10a100861fb27d9c5755dfd68f615629fae" }, { "url": "https://git.kernel.org/stable/c/799a34901b634008db4a7ece3900e2b971d4c932", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/799a34901b634008db4a7ece3900e2b971d4c932" }, { "url": "https://git.kernel.org/stable/c/ef472cc6693b16b202a916482df72f35d94bd69e", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/ef472cc6693b16b202a916482df72f35d94bd69e" }, { "url": "https://git.kernel.org/stable/c/26488172b0292bed837b95a006a3f3431d1898c3", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/26488172b0292bed837b95a006a3f3431d1898c3" } ] }, "generator": { "engine": "bippy-c9c4e1df01b2" } }