CVE-2026-63839

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63839", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.015Z", "datePublished": "2026-07-19T14:04:35.146Z", "dateUpdated": "2026-09-07T15:45:02.719Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-07T15:45:02.719Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/platform/x86/lenovo/wmi-helpers.c"], "versions": [{"version": "e521d16e76cd9ea99c585e064f4e7daf657b1451", "lessThan": "ce493f9261cd3f4bffe2f72481d8c3ee01c559a3", "status": "affected", "versionType": "git"}, {"version": "e521d16e76cd9ea99c585e064f4e7daf657b1451", "lessThan": "40a984dd0602e238ad893b167751620e751d1199", "status": "affected", "versionType": "git"}, {"version": "e521d16e76cd9ea99c585e064f4e7daf657b1451", "lessThan": "0c3887a134f191723b53e2a47e501b534c8723ee", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/platform/x86/lenovo/wmi-helpers.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ce493f9261cd3f4bffe2f72481d8c3ee01c559a3"}, {"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"}}}}

{}

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{"bugzilla": {"description": "kernel: platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int()", "id": "2502288", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502288"}, "csaw": false, "cwe": "CWE-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nplatform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int()\nlwmi_dev_evaluate_int() leaks output.pointer when retval == NULL (found\nby sashiko.dev [1]).\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.\nNo functional change intended.", "A flaw was found in the Linux kernel's Lenovo WMI (Windows Management Instrumentation) helpers. The `lwmi_dev_evaluate_int()` function was identified to have a memory leak, where allocated memory was not properly released under certain conditions. This could lead to a gradual consumption of system memory, potentially impacting system stability or performance over extended periods."], "name": "CVE-2026-63839", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-63839\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-63839\nhttps://lore.kernel.org/linux-cve-announce/2026071928-CVE-2026-63839-785e@gregkh/T"]}

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