{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-71160 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-71160 is a medium-severity denial of service vulnerability in Linux kernel, published on 23 Jan 2026. 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-2025-71160 and fix it if it is affected.\n\nWhat it is: CVE-2025-71160 is a medium-severity denial of service vulnerability in Linux kernel, published on 23 Jan 2026. 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-2025-71160 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-2025-71160/ (Markdown: https://insights.sbomify.com/CVE-2025-71160/index.md)","id":"CVE-2025-71160","markdown":"https://insights.sbomify.com/CVE-2025-71160/index.md","name":"CVE-2025-71160","record":{"aliases":["AZL-75126","AZL-78434","BELL-CVE-2025-71160","DEBIAN-CVE-2025-71160","GHSA-3xmc-22wh-x2gr","ROOT-OS-DEBIAN-11-CVE-2025-71160","ROOT-OS-DEBIAN-12-CVE-2025-71160","ROOT-OS-DEBIAN-13-CVE-2025-71160","ROOT-OS-UBUNTU-2204-CVE-2025-71160","ROOT-OS-UBUNTU-2404-CVE-2025-71160","UBUNTU-CVE-2025-71160"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A flaw in Linux kernel nf_tables allows attackers to cause CPU soft lockups and denial of service via excessive chain validation loops.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: avoid chain re-validation if possible\n\nHamza Mahfooz reports cpu soft lock-ups in\nnft_chain_validate():\n\n watchdog: BUG: soft lockup - CPU#1 stuck for 27s! [iptables-nft-re:37547]\n[..]\n RIP: 0010:nft_chain_validate+0xcb/0x110 [nf_tables]\n[..]\n  nft_immediate_validate+0x36/0x50 [nf_tables]\n  nft_chain_validate+0xc9/0x110 [nf_tables]\n  nft_immediate_validate+0x36/0x50 [nf_tables]\n  nft_chain_validate+0xc9/0x110 [nf_tables]\n  nft_immediate_validate+0x36/0x50 [nf_tables]\n  nft_chain_validate+0xc9/0x110 [nf_tables]\n  nft_immediate_validate+0x36/0x50 [nf_tables]\n  nft_chain_validate+0xc9/0x110 [nf_tables]\n  nft_immediate_validate+0x36/0x50 [nf_tables]\n  nft_chain_validate+0xc9/0x110 [nf_tables]\n  nft_immediate_validate+0x36/0x50 [nf_tables]\n  nft_chain_validate+0xc9/0x110 [nf_tables]\n  nft_table_validate+0x6b/0xb0 [nf_tables]\n  nf_tables_validate+0x8b/0xa0 [nf_tables]\n  nf_tables_commit+0x1df/0x1eb0 [nf_tables]\n[..]\n\nCurrently nf_tables will traverse the entire table (chain graph), starting\nfrom the entry points (base chains), exploring all possible paths\n(chain jumps).  But there are cases where we could avoid revalidation.\n\nConsider:\n1  input -\u003e j2 -\u003e j3\n2  input -\u003e j2 -\u003e j3\n3  input -\u003e j1 -\u003e j2 -\u003e j3\n\nThen the second rule does not need to revalidate j2, and, by extension j3,\nbecause this was already checked during validation of the first rule.\nWe need to validate it only for rule 3.\n\nThis is needed because chain loop detection also ensures we do not exceed\nthe jump stack: Just because we know that j2 is cycle free, its last jump\nmight now exceed the allowed stack size.  We also need to update all\nreachable chains with the new largest observed call depth.\n\nCare has to be taken to revalidate even if the chain depth won't be an\nissue: chain validation also ensures that expressions are not called from\ninvalid base chains.  For example, the masquerade expression can only be\ncalled from NAT postrouting base chains.\n\nTherefore we also need to keep record of the base chain context (type,\nhooknum) and revalidate if the chain becomes reachable from a different\nhook location.","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: nf_tables: avoid chain re-validation if possible","id":"CVE-2025-71160","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"dm-verity: disable recursive forward error correction","id":"CVE-2025-71161"},"packages":[],"prev":{"headline":"btrfs: fix use-after-free warning in btrfs_get_or_create_delayed_node()","id":"CVE-2025-71159"},"products":["Linux"],"published":"2026-01-23","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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A flaw in Linux kernel nf_tables allows attackers to cause CPU soft lockups and denial of service via excessive chain validation loops.","url":"https://insights.sbomify.com/CVE-2025-71160/"}