{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-56638 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-56638 is a high-severity vulnerability in Linux kernel, published on 27 Dec 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-2024-56638 and fix it if it is affected.\n\nWhat it is: CVE-2024-56638 is a high-severity vulnerability in Linux kernel, published on 27 Dec 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-2024-56638 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-2024-56638/ (Markdown: https://insights.sbomify.com/CVE-2024-56638/index.md)","id":"CVE-2024-56638","markdown":"https://insights.sbomify.com/CVE-2024-56638/index.md","name":"CVE-2024-56638","record":{"aliases":["BELL-CVE-2024-56638","DEBIAN-CVE-2024-56638","GHSA-7g3g-qg84-qxww","UBUNTU-CVE-2024-56638"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel netfilter","requires_auth":"low_privilege","summary":"A race condition in Linux kernel netfilter allows softirqs to corrupt percpu data, potentially causing system crashes or instability.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_inner: incorrect percpu area handling under softirq\n\nSoftirq can interrupt ongoing packet from process context that is\nwalking over the percpu area that contains inner header offsets.\n\nDisable bh and perform three checks before restoring the percpu inner\nheader offsets to validate that the percpu area is valid for this\nskbuff:\n\n1) If the NFT_PKTINFO_INNER_FULL flag is set on, then this skbuff\n   has already been parsed before for inner header fetching to\n   register.\n\n2) Validate that the percpu area refers to this skbuff using the\n   skbuff pointer as a cookie. If there is a cookie mismatch, then\n   this skbuff needs to be parsed again.\n\n3) Finally, validate if the percpu area refers to this tunnel type.\n\nOnly after these three checks the percpu area is restored to a on-stack\ncopy and bh is enabled again.\n\nAfter inner header fetching, the on-stack copy is stored back to the\npercpu area.","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: nft_inner: incorrect percpu area handling under softirq","id":"CVE-2024-56638","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"race_condition","year":"2024"},"n_packages":0,"n_references":3,"next":{"headline":"net: hsr: must allocate more bytes for RedBox support","id":"CVE-2024-56639"},"packages":[],"prev":{"headline":"netfilter: ipset: Hold module reference while requesting a module","id":"CVE-2024-56637"},"products":["Linux"],"published":"2024-12-27","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 race condition in Linux kernel netfilter allows softirqs to corrupt percpu data, potentially causing system crashes or instability.","url":"https://insights.sbomify.com/CVE-2024-56638/"}