{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-50257 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-50257 is a high-severity use after free vulnerability in Linux kernel, published on 9 Nov 2024. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2024-50257 and fix it if it is affected.\n\nWhat it is: CVE-2024-50257 is a high-severity use after free vulnerability in Linux kernel, published on 9 Nov 2024. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2024-50257 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2024-50257/ (Markdown: https://insights.sbomify.com/CVE-2024-50257/index.md)","id":"CVE-2024-50257","markdown":"https://insights.sbomify.com/CVE-2024-50257/index.md","name":"CVE-2024-50257","record":{"aliases":["AZL-53259","AZL-53304","BELL-CVE-2024-50257","DEBIAN-CVE-2024-50257","GHSA-qrhx-x8x3-mm5q","UBUNTU-CVE-2024-50257"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A use-after-free vulnerability in the Linux kernel netfilter module allows local attackers to potentially execute arbitrary code or escalate privileges.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"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 \u003cTASK\u003e\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-\u003estate = 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, \u0026xt_templates[af]...)\n\t\t\t\t\t\t\tif (strcmp(tmpl-\u003ename, 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, \u0026xt_net-\u003etables[af]...)\n\t\t\t\t\t\t\treturn t;  //not get refcnt\n\t\t\t\t\t  module_put(t-\u003eme) //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-\u003eme. Check\nmodule in xt_net-\u003etables list re-traversal to fix it.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"netfilter: Fix use-after-free in get_info()","id":"CVE-2024-50257","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2024"},"n_packages":0,"n_references":5,"next":{"headline":"net: fix crash when config small gso_max_size/gso_ipv4_max_size","id":"CVE-2024-50258"},"packages":[],"prev":{"headline":"netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6()","id":"CVE-2024-50256"},"products":["Linux"],"published":"2024-11-09","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel netfilter module allows local attackers to potentially execute arbitrary code or escalate privileges.","url":"https://insights.sbomify.com/CVE-2024-50257/"}