{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-98026 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-98026 is an use after free vulnerability in Linux, published on 25 Sep 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-2026-98026 and fix it if it is affected.\n\nWhat it is: CVE-2026-98026 is an use after free vulnerability in Linux, published on 25 Sep 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-2026-98026 in the wild and no public exploit code.\n\nAffected product: Linux. 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-2026-98026/ (Markdown: https://insights.sbomify.com/CVE-2026-98026/index.md)","id":"CVE-2026-98026","markdown":"https://insights.sbomify.com/CVE-2026-98026/index.md","name":"CVE-2026-98026","record":{"aliases":["AZL-104513","BELL-CVE-2026-98026","DEBIAN-CVE-2026-98026","GHSA-r366-wr25-m9fj","UBUNTU-CVE-2026-98026"],"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 bridge","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel bridge multicast code allows local attackers to cause a denial of service or potentially execute code.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bridge: mcast: properly convert mglist to rcu\n\nSashiko reported a bug [1] that br_multicast_del_port_group unlists the\nport group not using proper rcu helper that preserves the next pointer and\nafter that immediately frees the port group without waiting for rcu grace\nperiod. The only rcu walker of mglist is br_multicast_list_adjacent() and\nit turns out that function has always been buggy because mglist was never\nproperly converted to RCU. Fix it by converting it to rcu and moving its\ninitialization after eth_addr's. Initializing p-\u003enext can use\nRCU_INIT_POINTER because we have a barrier from the hlist_add_head_rcu call\nlater, besides we're initializing an unpublished structure anyway.\n\n[1] https://netdev-ai.bots.linux.dev/sashiko/#/patchset/20260826014200.362304-1-littleddfu%40gmail.com","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: bridge: mcast: properly convert mglist to rcu","id":"CVE-2026-98026","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"net: dsa: mv88e6xxx: bound the policy rule dump by the caller's buffer size","id":"CVE-2026-98027"},"packages":[],"prev":{"headline":"net: usb: cx82310_eth: drop URB after 0xffff reboot sentinel to prevent partial_data heap overflow","id":"CVE-2026-98025"},"products":["Linux"],"published":"2026-09-25","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel bridge multicast code allows local attackers to cause a denial of service or potentially execute code.","url":"https://insights.sbomify.com/CVE-2026-98026/"}