{"api_version":"1","generated_at":"2026-07-24T03:33:22+00:00","cve":"CVE-2026-63839","urls":{"html":"https://cve.report/CVE-2026-63839","api":"https://cve.report/api/cve/CVE-2026-63839.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-63839","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63839"},"summary":{"title":"platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int()","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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 15:16:50","updated_at":"2026-07-19 15:16:50"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/0c3887a134f191723b53e2a47e501b534c8723ee","name":"https://git.kernel.org/stable/c/0c3887a134f191723b53e2a47e501b534c8723ee","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/40a984dd0602e238ad893b167751620e751d1199","name":"https://git.kernel.org/stable/c/40a984dd0602e238ad893b167751620e751d1199","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63839","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63839","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e521d16e76cd9ea99c585e064f4e7daf657b1451 40a984dd0602e238ad893b167751620e751d1199 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e521d16e76cd9ea99c585e064f4e7daf657b1451 0c3887a134f191723b53e2a47e501b534c8723ee git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.17","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.17 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.10 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"63839","cve":"CVE-2026-63839","epss":"0.001560000","percentile":"0.051540000","score_date":"2026-07-20","updated_at":"2026-07-21 00:13:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/platform/x86/lenovo/wmi-helpers.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"40a984dd0602e238ad893b167751620e751d1199","status":"affected","version":"e521d16e76cd9ea99c585e064f4e7daf657b1451","versionType":"git"},{"lessThan":"0c3887a134f191723b53e2a47e501b534c8723ee","status":"affected","version":"e521d16e76cd9ea99c585e064f4e7daf657b1451","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/platform/x86/lenovo/wmi-helpers.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.17"},{"lessThan":"6.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.10","versionStartIncluding":"6.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.17","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-07-19T14:04:35.146Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/40a984dd0602e238ad893b167751620e751d1199"},{"url":"https://git.kernel.org/stable/c/0c3887a134f191723b53e2a47e501b534c8723ee"}],"title":"platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-63839","datePublished":"2026-07-19T14:04:35.146Z","dateReserved":"2026-07-19T07:54:57.015Z","dateUpdated":"2026-07-19T14:04:35.146Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 15:16:50","lastModifiedDate":"2026-07-19 15:16:50","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"63839","Ordinal":"1","Title":"platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_ev","CVE":"CVE-2026-63839","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"63839","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_ev"}]}}}