{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-23064 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-23064 is a medium-severity vulnerability in Linux kernel, published on 4 Feb 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-2026-23064 and fix it if it is affected.\n\nWhat it is: CVE-2026-23064 is a medium-severity vulnerability in Linux kernel, published on 4 Feb 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-2026-23064 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-2026-23064/ (Markdown: https://insights.sbomify.com/CVE-2026-23064/index.md)","id":"CVE-2026-23064","markdown":"https://insights.sbomify.com/CVE-2026-23064/index.md","name":"CVE-2026-23064","record":{"aliases":["BELL-CVE-2026-23064","DEBIAN-CVE-2026-23064","GHSA-949x-gvhg-pggc","ROOT-OS-UBUNTU-2204-CVE-2026-23064","ROOT-OS-UBUNTU-2404-CVE-2026-23064","UBUNTU-CVE-2026-23064"],"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 NULL pointer dereference in the Linux kernel's IFE action allows local attackers to cause a system crash via crafted network packets.","user_interaction":"not_required","vuln_class":"null_dereference"},"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":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_ife: avoid possible NULL deref\n\ntcf_ife_encode() must make sure ife_encode() does not return NULL.\n\nsyzbot reported:\n\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n RIP: 0010:ife_tlv_meta_encode+0x41/0xa0 net/ife/ife.c:166\nCPU: 3 UID: 0 PID: 8990 Comm: syz.0.696 Not tainted syzkaller #0 PREEMPT(full)\nCall Trace:\n \u003cTASK\u003e\n  ife_encode_meta_u32+0x153/0x180 net/sched/act_ife.c:101\n  tcf_ife_encode net/sched/act_ife.c:841 [inline]\n  tcf_ife_act+0x1022/0x1de0 net/sched/act_ife.c:877\n  tc_act include/net/tc_wrapper.h:130 [inline]\n  tcf_action_exec+0x1c0/0xa20 net/sched/act_api.c:1152\n  tcf_exts_exec include/net/pkt_cls.h:349 [inline]\n  mall_classify+0x1a0/0x2a0 net/sched/cls_matchall.c:42\n  tc_classify include/net/tc_wrapper.h:197 [inline]\n  __tcf_classify net/sched/cls_api.c:1764 [inline]\n  tcf_classify+0x7f2/0x1380 net/sched/cls_api.c:1860\n  multiq_classify net/sched/sch_multiq.c:39 [inline]\n  multiq_enqueue+0xe0/0x510 net/sched/sch_multiq.c:66\n  dev_qdisc_enqueue+0x45/0x250 net/core/dev.c:4147\n  __dev_xmit_skb net/core/dev.c:4262 [inline]\n  __dev_queue_xmit+0x2998/0x46c0 net/core/dev.c:4798","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":"net/sched: act_ife: avoid possible NULL deref","id":"CVE-2026-23064","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":7,"next":{"headline":"platform/x86/amd: Fix memory leak in wbrf_record()","id":"CVE-2026-23065"},"packages":[],"prev":{"headline":"uacce: ensure safe queue release with state management","id":"CVE-2026-23063"},"products":["Linux"],"published":"2026-02-04","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A NULL pointer dereference in the Linux kernel's IFE action allows local attackers to cause a system crash via crafted network packets.","url":"https://insights.sbomify.com/CVE-2026-23064/"}