{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"MEDIUM" }, "category":"csaf_vex", "csaf_version":"2.0", "distribution":{ "tlp":{ "label":"WHITE", "url":"https:/www.first.org/tlp/" } }, "lang":"en", "notes":[ { "text":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: Fix use-after-free in get_info()\n\nip6table_nat module unload has refcnt warning for UAF. call trace is:\n\nWARNING: CPU: 1 PID: 379 at kernel/module/main.c:853 module_put+0x6f/0x80\nModules linked in: ip6table_nat(-)\nCPU: 1 UID: 0 PID: 379 Comm: ip6tables Not tainted 6.12.0-rc4-00047-gc2ee9f594da8-dirty #205\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996),\nBIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nRIP: 0010:module_put+0x6f/0x80\nCall Trace:\n \n get_info+0x128/0x180\n do_ip6t_get_ctl+0x6a/0x430\n nf_getsockopt+0x46/0x80\n ipv6_getsockopt+0xb9/0x100\n rawv6_getsockopt+0x42/0x190\n do_sock_getsockopt+0xaa/0x180\n __sys_getsockopt+0x70/0xc0\n __x64_sys_getsockopt+0x20/0x30\n do_syscall_64+0xa2/0x1a0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nConcurrent execution of module unload and get_info() trigered the warning.\nThe root cause is as follows:\n\ncpu0\t\t\t\t cpu1\nmodule_exit\n//mod->state = MODULE_STATE_GOING\n ip6table_nat_exit\n xt_unregister_template\n\tkfree(t)\n\t//removed from templ_list\n\t\t\t\t getinfo()\n\t\t\t\t\t t = xt_find_table_lock\n\t\t\t\t\t\tlist_for_each_entry(tmpl, &xt_templates[af]...)\n\t\t\t\t\t\t\tif (strcmp(tmpl->name, name))\n\t\t\t\t\t\t\t\tcontinue; //table not found\n\t\t\t\t\t\t\ttry_module_get\n\t\t\t\t\t\tlist_for_each_entry(t, &xt_net->tables[af]...)\n\t\t\t\t\t\t\treturn t; //not get refcnt\n\t\t\t\t\t module_put(t->me) //uaf\n unregister_pernet_subsys\n //remove table from xt_net list\n\nWhile xt_table module was going away and has been removed from\nxt_templates list, we couldnt get refcnt of xt_table->me. Check\nmodule in xt_net->tables list re-traversal to fix it.", "category":"general", "title":"Synopsis" } ], "publisher":{ "issuing_authority":"openEuler security committee", "name":"openEuler", "namespace":"https://www.openeuler.org", "contact_details":"openeuler-security@openeuler.org", "category":"vendor" }, "references":[ { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2024-50257" }, { "summary":"CVE-2024-50257 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2024/csaf-openeuler-cve-2024-50257.json" }, { "summary":"openEuler-SA-2024-2537", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-2537" }, { "summary":"CVE-2024-50257", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2024-50257&packageName=kernel" } ], "title":"openEuler cve CVE-2024-50257", "tracking":{ "initial_release_date":"2024-12-13T21:17:34+08:00", "revision_history":[ { "date":"2024-12-13T21:17:34+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2024-12-13T21:17:34+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2024-12-13T21:17:34+08:00", "id":"CVE-2024-50257", "version":"1.0.0", "status":"interim" } }, "product_tree":{ "branches":[ { "name":"openEuler", "category":"vendor", "branches":[ { "name":"openEuler", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS" }, "product_id":"openEuler-24.03-LTS", "name":"openEuler-24.03-LTS" }, "name":"openEuler-24.03-LTS", "category":"product_version" } ], "category":"product_name" }, { "name":"aarch64", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS" }, "product_id":"bpftool-6.6.0-64.0.0.61.oe2403.aarch64.rpm", "name":"bpftool-6.6.0-64.0.0.61.oe2403.aarch64.rpm" }, 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rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nRIP: 0010:module_put+0x6f/0x80\nCall Trace:\n \n get_info+0x128/0x180\n do_ip6t_get_ctl+0x6a/0x430\n nf_getsockopt+0x46/0x80\n ipv6_getsockopt+0xb9/0x100\n rawv6_getsockopt+0x42/0x190\n do_sock_getsockopt+0xaa/0x180\n __sys_getsockopt+0x70/0xc0\n __x64_sys_getsockopt+0x20/0x30\n do_syscall_64+0xa2/0x1a0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nConcurrent execution of module unload and get_info() trigered the warning.\nThe root cause is as follows:\n\ncpu0\t\t\t\t cpu1\nmodule_exit\n//mod->state = MODULE_STATE_GOING\n ip6table_nat_exit\n xt_unregister_template\n\tkfree(t)\n\t//removed from templ_list\n\t\t\t\t getinfo()\n\t\t\t\t\t t = xt_find_table_lock\n\t\t\t\t\t\tlist_for_each_entry(tmpl, &xt_templates[af]...)\n\t\t\t\t\t\t\tif (strcmp(tmpl->name, name))\n\t\t\t\t\t\t\t\tcontinue; //table not found\n\t\t\t\t\t\t\ttry_module_get\n\t\t\t\t\t\tlist_for_each_entry(t, &xt_net->tables[af]...)\n\t\t\t\t\t\t\treturn t; //not get refcnt\n\t\t\t\t\t module_put(t->me) //uaf\n unregister_pernet_subsys\n //remove table from xt_net list\n\nWhile xt_table module was going away and has been removed from\nxt_templates list, we couldnt get refcnt of xt_table->me. Check\nmodule in xt_net->tables list re-traversal to fix it.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS:bpftool-6.6.0-64.0.0.61.oe2403.aarch64", "openEuler-24.03-LTS:bpftool-debuginfo-6.6.0-64.0.0.61.oe2403.aarch64", "openEuler-24.03-LTS:kernel-6.6.0-64.0.0.61.oe2403.aarch64", "openEuler-24.03-LTS:kernel-debuginfo-6.6.0-64.0.0.61.oe2403.aarch64", "openEuler-24.03-LTS:kernel-debugsource-6.6.0-64.0.0.61.oe2403.aarch64", "openEuler-24.03-LTS:kernel-devel-6.6.0-64.0.0.61.oe2403.aarch64", "openEuler-24.03-LTS:kernel-headers-6.6.0-64.0.0.61.oe2403.aarch64", "openEuler-24.03-LTS:kernel-source-6.6.0-64.0.0.61.oe2403.aarch64", "openEuler-24.03-LTS:kernel-tools-6.6.0-64.0.0.61.oe2403.aarch64", "openEuler-24.03-LTS:kernel-tools-debuginfo-6.6.0-64.0.0.61.oe2403.aarch64", "openEuler-24.03-LTS:kernel-tools-devel-6.6.0-64.0.0.61.oe2403.aarch64", "openEuler-24.03-LTS:perf-6.6.0-64.0.0.61.oe2403.aarch64", 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"openEuler-24.03-LTS:kernel-6.6.0-64.0.0.61.oe2403.src" ] } ], "threats":[ { "details":"High", "category":"impact" } ], "title":"CVE-2024-50257" } ] }