CVE-2026-72144

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This leaves the\nnotifier, debugfs directory, keyboard backlight LED and optional\ntouchpad LED registered after dell_init() returns an error.\n\nAdd the missing cleanup calls before tearing down rfkill."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The flaw is only reachable on affected Dell laptops through local kernel interfaces\u2014late_initcall dell_init() and, after the broken teardown, orphaned sysfs LED nodes, debugfs files, and Dell WMI keyboard-backlight notifier callbacks. There is no network, Bluetooth, or remote protocol path into dell-laptop.c.\nAC:L - On Dell hardware where micmute/mute/backlight registration or dell_get_intensity() fails after earlier setup succeeds, dell_init() deterministically enters the incomplete fail_led path; subsequent notifier delivery or sysfs access to the still-registered LED/debugfs objects reliably exercises freed platform_device state without races.\nPR:L - Exploitation requires only a local session on the Dell system: world-readable LED sysfs attributes (DEVICE_ATTR_RW brightness) and Dell WMI KEY_KBDILLUMTOGGLE events invoke the dangling notifier/LED callbacks without CAP_SYS_ADMIN, real root, or user-namespace capabilities.\nUI:N - After boot leaves the partial-init state, a local attacker triggers the bug themselves by reading/writing orphaned /sys/class/leds entries or generating keyboard-backlight WMI events; no separate victim action, administrator approval, or privileged helper is required.\nS:U - The use-after-free and heap corruption occur entirely within the host kernel's memory and security authority on the same Dell machine; this is a standard local kernel compromise path without VM escape, IOMMU bypass, or sandbox-boundary crossing.\nC:H - platform_device_del() runs while keyboard/touchpad LED classdevs and the dell_laptop notifier remain registered against the freed platform device, creating a use-after-free whose sysfs/WMI callbacks can read adjacent slab contents and disclose kernel memory to userspace.\nI:H - Orphaned led_classdev and notifier objects parented to the deleted platform_device let attacker-influenced brightness/WMI activity drive callbacks and sysfs notifications on freed device structures, enabling heap grooming and arbitrary kernel writes suitable for control-flow hijacking.\nA:H - Dereferencing the dangling platform_device/LED device objects from notifier callbacks or sysfs brightness operations reliably provokes kernel oops/panic on affected Dell laptops, and the underlying use-after-free can crash the system even when full exploitation is not attempted."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/platform/x86/dell/dell-laptop.c"], "versions": [{"version": "037accfa14b28ecf49d9060063929c4b4cde373f", "lessThan": "b0a2f1ff408beb3aa5832098e8805db4d31dba7e", "status": "affected", "versionType": "git"}, {"version": "037accfa14b28ecf49d9060063929c4b4cde373f", "lessThan": "e4908b3bed755f73870416b971e162a8d0ef0aef", "status": "affected", "versionType": "git"}, {"version": "037accfa14b28ecf49d9060063929c4b4cde373f", "lessThan": "6bd76d5421a72d2526c9be8f01f55bee960f899f", "status": "affected", "versionType": "git"}, {"version": "037accfa14b28ecf49d9060063929c4b4cde373f", "lessThan": "1e41ca4a7fba2e680d6950e9511245255fffa46c", "status": "affected", "versionType": "git"}, {"version": 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There is no network, Bluetooth, or remote protocol path into dell-laptop.c.\nAC:L - On Dell hardware where micmute/mute/backlight registration or dell_get_intensity() fails after earlier setup succeeds, dell_init() deterministically enters the incomplete fail_led path; subsequent notifier delivery or sysfs access to the still-registered LED/debugfs objects reliably exercises freed platform_device state without races.\nPR:L - Exploitation requires only a local session on the Dell system: world-readable LED sysfs attributes (DEVICE_ATTR_RW brightness) and Dell WMI KEY_KBDILLUMTOGGLE events invoke the dangling notifier/LED callbacks without CAP_SYS_ADMIN, real root, or user-namespace capabilities.\nUI:N - After boot leaves the partial-init state, a local attacker triggers the bug themselves by reading/writing orphaned /sys/class/leds entries or generating keyboard-backlight WMI events; no separate victim action, administrator approval, or privileged helper is required.\nS:U - The use-after-free and heap corruption occur entirely within the host kernel's memory and security authority on the same Dell machine; this is a standard local kernel compromise path without VM escape, IOMMU bypass, or sandbox-boundary crossing.\nC:H - platform_device_del() runs while keyboard/touchpad LED classdevs and the dell_laptop notifier remain registered against the freed platform device, creating a use-after-free whose sysfs/WMI callbacks can read adjacent slab contents and disclose kernel memory to userspace.\nI:H - Orphaned led_classdev and notifier objects parented to the deleted platform_device let attacker-influenced brightness/WMI activity drive callbacks and sysfs notifications on freed device structures, enabling heap grooming and arbitrary kernel writes suitable for control-flow hijacking.\nA:H - Dereferencing the dangling platform_device/LED device objects from notifier callbacks or sysfs brightness operations reliably provokes kernel oops/panic on affected Dell laptops, and the underlying use-after-free can crash the system even when full exploitation is not attempted."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "037accfa14b28ecf49d9060063929c4b4cde373f", "lessThan": "b0a2f1ff408beb3aa5832098e8805db4d31dba7e", "versionType": "git"}, {"status": "affected", "version": "037accfa14b28ecf49d9060063929c4b4cde373f", "lessThan": "e4908b3bed755f73870416b971e162a8d0ef0aef", "versionType": "git"}, {"status": "affected", "version": "037accfa14b28ecf49d9060063929c4b4cde373f", "lessThan": "6bd76d5421a72d2526c9be8f01f55bee960f899f", "versionType": "git"}, {"status": "affected", "version": "037accfa14b28ecf49d9060063929c4b4cde373f", "lessThan": "1e41ca4a7fba2e680d6950e9511245255fffa46c", "versionType": "git"}, {"status": "affected", "version": "037accfa14b28ecf49d9060063929c4b4cde373f", "lessThan": "b351e082711d12f075a36a6cd67709693689315f", "versionType": "git"}, {"status": "affected", "version": "037accfa14b28ecf49d9060063929c4b4cde373f", "lessThan": "6e9cab2247e5b243ae2d907ce7c948a8a9c8d61a", "versionType": "git"}], "programFiles": ["drivers/platform/x86/dell/dell-laptop.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.37"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.37", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.191", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.148", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.97", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.40", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.5", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/platform/x86/dell/dell-laptop.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/b0a2f1ff408beb3aa5832098e8805db4d31dba7e"}, {"url": "https://git.kernel.org/stable/c/e4908b3bed755f73870416b971e162a8d0ef0aef"}, {"url": "https://git.kernel.org/stable/c/6bd76d5421a72d2526c9be8f01f55bee960f899f"}, {"url": "https://git.kernel.org/stable/c/1e41ca4a7fba2e680d6950e9511245255fffa46c"}, {"url": "https://git.kernel.org/stable/c/b351e082711d12f075a36a6cd67709693689315f"}, {"url": "https://git.kernel.org/stable/c/6e9cab2247e5b243ae2d907ce7c948a8a9c8d61a"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: dell-laptop: fix missing cleanups in init error path\n\ndell_init() initializes several resources after dell_setup_rfkill(),\nincluding the optional touchpad LED, keyboard backlight LED, battery\nhook, debugfs directory and dell-laptop notifier.\n\nIf a later LED or backlight registration fails, the error path only\ntears down the battery hook and rfkill resources. This leaves the\nnotifier, debugfs directory, keyboard backlight LED and optional\ntouchpad LED registered after dell_init() returns an error.\n\nAdd the missing cleanup calls before tearing down rfkill."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.191", "versionStartIncluding": "2.6.37"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.148", "versionStartIncluding": "2.6.37"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.97", "versionStartIncluding": "2.6.37"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.40", "versionStartIncluding": "2.6.37"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.5", "versionStartIncluding": "2.6.37"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "2.6.37"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:28:50.165Z"}}}, "cveMetadata": {"cveId": "CVE-2026-72144", "state": "PUBLISHED", "dateUpdated": "2026-10-30T12:28:50.165Z", "dateReserved": "2026-08-09T03:40:39.908Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-15T05:53:16.974Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/platform/x86/dell/dell-laptop.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "b0a2f1ff408beb3aa5832098e8805db4d31dba7e", "status": "affected", "version": "037accfa14b28ecf49d9060063929c4b4cde373f", "versionType": "git"}, {"lessThan": "e4908b3bed755f73870416b971e162a8d0ef0aef", "status": "affected", "version": "037accfa14b28ecf49d9060063929c4b4cde373f", "versionType": "git"}, {"lessThan": "6bd76d5421a72d2526c9be8f01f55bee960f899f", "status": "affected", "version": "037accfa14b28ecf49d9060063929c4b4cde373f", "versionType": "git"}, {"lessThan": "1e41ca4a7fba2e680d6950e9511245255fffa46c", "status": "affected", "version": "037accfa14b28ecf49d9060063929c4b4cde373f", "versionType": "git"}, {"lessThan": "b351e082711d12f075a36a6cd67709693689315f", "status": "affected", "version": "037accfa14b28ecf49d9060063929c4b4cde373f", "versionType": "git"}, {"lessThan": "6e9cab2247e5b243ae2d907ce7c948a8a9c8d61a", "status": "affected", "version": "037accfa14b28ecf49d9060063929c4b4cde373f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/platform/x86/dell/dell-laptop.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.37"}, {"lessThan": "2.6.37", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: dell-laptop: fix missing cleanups in init error path\n\ndell_init() initializes several resources after dell_setup_rfkill(),\nincluding the optional touchpad LED, keyboard backlight LED, battery\nhook, debugfs directory and dell-laptop notifier.\n\nIf a later LED or backlight registration fails, the error path only\ntears down the battery hook and rfkill resources. This leaves the\nnotifier, debugfs directory, keyboard backlight LED and optional\ntouchpad LED registered after dell_init() returns an error.\n\nAdd the missing cleanup calls before tearing down rfkill."}], "id": "CVE-2026-72144", "lastModified": "2026-10-30T13:19:47.410", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-72144", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T18:42:51.675316Z", "version": "2.0.3"}}]}, "published": "2026-08-15T06:21:32.067", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1e41ca4a7fba2e680d6950e9511245255fffa46c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6bd76d5421a72d2526c9be8f01f55bee960f899f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6e9cab2247e5b243ae2d907ce7c948a8a9c8d61a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b0a2f1ff408beb3aa5832098e8805db4d31dba7e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b351e082711d12f075a36a6cd67709693689315f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e4908b3bed755f73870416b971e162a8d0ef0aef"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: platform/x86: dell-laptop: fix missing cleanups in init error path", "id": "2516689", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516689"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's Dell laptop driver. During the initialization process, if an error occurs with LED or backlight registration, the system fails to properly clean up all allocated resources. This oversight can lead to resources, such as notifiers and debugfs directories, remaining active. Such unmanaged resource accumulation could potentially be exploited by a local attacker to cause system instability or a denial of service (DoS)."], "name": "CVE-2026-72144", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "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": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72144\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72144\nhttps://lore.kernel.org/linux-cve-announce/2026081533-CVE-2026-72144-1d2d@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[037accfa14b28ecf49d9060063929c4b4cde373f, e4908b3bed755f73870416b971e162a8d0ef0aef)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[037accfa14b28ecf49d9060063929c4b4cde373f, 6bd76d5421a72d2526c9be8f01f55bee960f899f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[037accfa14b28ecf49d9060063929c4b4cde373f, 1e41ca4a7fba2e680d6950e9511245255fffa46c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[037accfa14b28ecf49d9060063929c4b4cde373f, b351e082711d12f075a36a6cd67709693689315f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[037accfa14b28ecf49d9060063929c4b4cde373f, 6e9cab2247e5b243ae2d907ce7c948a8a9c8d61a)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.37"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.37)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,8.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T14:00:08.746964+00:00", "updated": "2026-08-22T13:30:17.327076+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}