{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-23378 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-23378 is a high-severity memory corruption vulnerability in Linux kernel, published on 25 Mar 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-2026-23378 and fix it if it is affected.\n\nWhat it is: CVE-2026-23378 is a high-severity memory corruption vulnerability in Linux kernel, published on 25 Mar 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-2026-23378 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-2026-23378/ (Markdown: https://insights.sbomify.com/CVE-2026-23378/index.md)","id":"CVE-2026-23378","markdown":"https://insights.sbomify.com/CVE-2026-23378/index.md","name":"CVE-2026-23378","record":{"aliases":["BELL-CVE-2026-23378","DEBIAN-CVE-2026-23378","GHSA-rj9j-3xqh-hv6f","ROOT-OS-DEBIAN-11-CVE-2026-23378","ROOT-OS-DEBIAN-12-CVE-2026-23378","ROOT-OS-DEBIAN-13-CVE-2026-23378","ROOT-OS-UBUNTU-2204-CVE-2026-23378","ROOT-OS-UBUNTU-2404-CVE-2026-23378","UBUNTU-CVE-2026-23378"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A flaw in the Linux kernel's IFE action allows unbounded metadata addition, leading to out-of-bounds writes and potential system crashes or code execution.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_ife: Fix metalist update behavior\n\nWhenever an ife action replace changes the metalist, instead of\nreplacing the old data on the metalist, the current ife code is appending\nthe new metadata. Aside from being innapropriate behavior, this may lead\nto an unbounded addition of metadata to the metalist which might cause an\nout of bounds error when running the encode op:\n\n[  138.423369][    C1] ==================================================================\n[  138.424317][    C1] BUG: KASAN: slab-out-of-bounds in ife_tlv_meta_encode (net/ife/ife.c:168)\n[  138.424906][    C1] Write of size 4 at addr ffff8880077f4ffe by task ife_out_out_bou/255\n[  138.425778][    C1] CPU: 1 UID: 0 PID: 255 Comm: ife_out_out_bou Not tainted 7.0.0-rc1-00169-gfbdfa8da05b6 #624 PREEMPT(full)\n[  138.425795][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011\n[  138.425800][    C1] Call Trace:\n[  138.425804][    C1]  \u003cIRQ\u003e\n[  138.425808][    C1]  dump_stack_lvl (lib/dump_stack.c:122)\n[  138.425828][    C1]  print_report (mm/kasan/report.c:379 mm/kasan/report.c:482)\n[  138.425839][    C1]  ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)\n[  138.425844][    C1]  ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:95 (discriminator 1) ./include/linux/rcupdate.h:975 (discriminator 1) ./include/linux/mmzone.h:2207 (discriminator 1) arch/x86/mm/physaddr.c:54 (discriminator 1))\n[  138.425853][    C1]  ? ife_tlv_meta_encode (net/ife/ife.c:168)\n[  138.425859][    C1]  kasan_report (mm/kasan/report.c:221 mm/kasan/report.c:597)\n[  138.425868][    C1]  ? ife_tlv_meta_encode (net/ife/ife.c:168)\n[  138.425878][    C1]  kasan_check_range (mm/kasan/generic.c:186 (discriminator 1) mm/kasan/generic.c:200 (discriminator 1))\n[  138.425884][    C1]  __asan_memset (mm/kasan/shadow.c:84 (discriminator 2))\n[  138.425889][    C1]  ife_tlv_meta_encode (net/ife/ife.c:168)\n[  138.425893][    C1]  ? ife_tlv_meta_encode (net/ife/ife.c:171)\n[  138.425898][    C1]  ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)\n[  138.425903][    C1]  ife_encode_meta_u16 (net/sched/act_ife.c:57)\n[  138.425910][    C1]  ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114)\n[  138.425916][    C1]  ? __asan_memcpy (mm/kasan/shadow.c:105 (discriminator 3))\n[  138.425921][    C1]  ? __pfx_ife_encode_meta_u16 (net/sched/act_ife.c:45)\n[  138.425927][    C1]  ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)\n[  138.425931][    C1]  tcf_ife_act (net/sched/act_ife.c:847 net/sched/act_ife.c:879)\n\nTo solve this issue, fix the replace behavior by adding the metalist to\nthe ife rcu data structure.","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: Fix metalist update behavior","id":"CVE-2026-23378","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"net/sched: ets: fix divide by zero in the offload path","id":"CVE-2026-23379"},"packages":[],"prev":{"headline":"ice: change XDP RxQ frag_size from DMA write length to xdp.frame_sz","id":"CVE-2026-23377"},"products":["Linux"],"published":"2026-03-25","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":"2026-10-15","vendors":["Linux"]},"summary":"A flaw in the Linux kernel's IFE action allows unbounded metadata addition, leading to out-of-bounds writes and potential system crashes or code execution.","url":"https://insights.sbomify.com/CVE-2026-23378/"}