{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-98559 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-98559 is an use after free vulnerability in Linux, published on 18 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-98559 and fix it if it is affected.\n\nWhat it is: CVE-2026-98559 is an use after free vulnerability in Linux, published on 18 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-98559 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-2026-98559/ (Markdown: https://insights.sbomify.com/CVE-2026-98559/index.md)","id":"CVE-2026-98559","markdown":"https://insights.sbomify.com/CVE-2026-98559/index.md","name":"CVE-2026-98559","record":{"aliases":["AZL-109433","BELL-CVE-2026-98559","DEBIAN-CVE-2026-98559","GHSA-4x5q-83g5-68jv","UBUNTU-CVE-2026-98559"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel's SMC protocol allows attackers to cause denial of service or execute arbitrary code via concurrent list traversal.","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/smc: fix UAF on lgr list traversal in smcr_port_err()\n\nsmcr_port_err() traverses smc_lgr_list.list without holding\nsmc_lgr_list.lock, allowing a concurrent smc_lgr_terminate_sched()\nto free an lgr while it is still being dereferenced.\n\nHold smc_lgr_list.lock across the traversal. Update\nsmc_ib_gid_check() to call smcr_port_err() after releasing the lock.","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/smc: fix UAF on lgr list traversal in smcr_port_err()","id":"CVE-2026-98559","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":7,"next":{"headline":"net/rds: size a connection's path set by the transport it ends up with","id":"CVE-2026-98560"},"packages":[],"prev":{"headline":"net: flush skb_defer_nodes in dev_cpu_dead()","id":"CVE-2026-98558"},"products":["Linux"],"published":"2026-10-18","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's SMC protocol allows attackers to cause denial of service or execute arbitrary code via concurrent list traversal.","url":"https://insights.sbomify.com/CVE-2026-98559/"}