{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-63839 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-63839 is a memory corruption vulnerability in Linux, published on 19 Jul 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-2026-63839 and fix it if it is affected.\n\nWhat it is: CVE-2026-63839 is a memory corruption vulnerability in Linux, published on 19 Jul 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-2026-63839 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-2026-63839/ (Markdown: https://insights.sbomify.com/CVE-2026-63839/index.md)","id":"CVE-2026-63839","markdown":"https://insights.sbomify.com/CVE-2026-63839/index.md","name":"CVE-2026-63839","record":{"aliases":["BELL-CVE-2026-63839","DEBIAN-CVE-2026-63839","GHSA-84pw-g3hf-x32j","UBUNTU-CVE-2026-63839"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel driver","requires_auth":"none","summary":"A memory leak in the Lenovo WMI helper driver allows local attackers to exhaust kernel memory, potentially causing a denial of service.","user_interaction":"not_required","vuln_class":"memory_corruption"},"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\nplatform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int()\n\nlwmi_dev_evaluate_int() leaks output.pointer when retval == NULL (found\nby sashiko.dev [1]).\n\nFix it by moving `ret_obj = output.pointer' outside of the `if (retval)'\nblock so that it is always freed by the __free cleanup callback.\n\nNo functional change intended.","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":"platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int()","id":"CVE-2026-63839","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"drm/amdgpu/jpeg: set no_user_fence for JPEG v5.3.0 ring","id":"CVE-2026-63840"},"packages":[],"prev":{"headline":"ASoC: rsnd: Fix potential out-of-bounds access of component_dais[]","id":"CVE-2026-63838"},"products":["Linux"],"published":"2026-07-19","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":"2026-09-07","vendors":["Linux"]},"summary":"A memory leak in the Lenovo WMI helper driver allows local attackers to exhaust kernel memory, potentially causing a denial of service.","url":"https://insights.sbomify.com/CVE-2026-63839/"}