CVE-2026-89504

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89504", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.715Z", "datePublished": "2026-09-11T19:43:52.024Z", "dateUpdated": "2026-10-19T08:47:55.766Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:47:55.766Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nregulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving dangling of_node pointer\n\nIn as3722_get_regulator_dt_data(), of_get_child_by_name() acquires a\nreference on np, which is then assigned to pdev->dev.of_node. The\nfunction immediately calls of_node_put(np), releasing the reference and\nleaving pdev->dev.of_node as a dangling pointer.\n\nRemove the of_node_put(np) call to let the device hold the reference."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The dangling of_node is created only on the local as3722-regulator platform probe path (I2C MFD as3722_i2c_probe \u2192 mfd_add_devices \u2192 as3722_regulator_probe \u2192 as3722_get_regulator_dt_data); the onboard AMS AS3722 PMIC is not reached via network packets, Bluetooth, or USB enumeration.\nAC:L - On affected Tegra boards the required regulators DT child exists, so of_get_child_by_name() then the premature of_node_put() runs deterministically at every probe with no race; with OF_OVERLAY (arm64 defconfig) the node can be freed while the device still holds the pointer.\nPR:N - tegra_defconfig builds MFD_AS3722 and REGULATOR_AS3722 in, so the vulnerable probe runs automatically at boot on Chromebooks (nyan), Jetson TK1, Toradex Apalis, and similar embedded systems with no capability check; an attacker only needs to power-cycle a shared kiosk or device.\nUI:N - Driver initialization and the of_node_put() run unattended during kernel boot on affected hardware; no victim action such as mounting a filesystem, opening a device, or plugging in USB is required.\nS:U - The use-after-free corrupts kernel device_node/kobject memory on the host; AS3722 is a board PMIC regulator driver and does not cross a VM, IOMMU, or other security-authority boundary.\nC:H - The premature of_node_put() leaves pdev->dev.of_node dangling; a later put on device release or DT overlay teardown can free the device_node while the driver and OF core still use it, enabling reads of reallocated slab memory.\nI:H - Use-after-free of the device_node heap object (kobject, fwnode, property and parent/child links) can be turned into an arbitrary write and control-flow hijack via heap reuse, matching scoring guidance that UAF is Integrity High.\nA:H - Dereferencing the dangling of_node during regulator registration, sysfs, overlay removal, or platform_device_release() can oops or panic the kernel, including at boot on systems where AS3722 supplies CPU and core rails."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/regulator/as3722-regulator.c"], "versions": [{"version": "bc407334e9a6a745de5360395282beb2690adf48", "lessThan": "d9b1407477fb736978b04108073180ca84958936", "status": "affected", "versionType": "git"}, {"version": "bc407334e9a6a745de5360395282beb2690adf48", "lessThan": "bd5606e9da1a01a61c7d2f5df36243414a0142be", "status": "affected", "versionType": "git"}, {"version": "bc407334e9a6a745de5360395282beb2690adf48", "lessThan": "0bde4f140e90f87ebd49cd9c884c4bb3f19fe931", "status": "affected", "versionType": "git"}, {"version": "bc407334e9a6a745de5360395282beb2690adf48", "lessThan": "eda08b6bd64f01ca9defbfcc9e0c3e30f46cfc02", "status": "affected", "versionType": "git"}, {"version": "bc407334e9a6a745de5360395282beb2690adf48", "lessThan": "d3c1316d84e0a036890b00ae6e4c0b0b80f70c25", "status": "affected", "versionType": "git"}, {"version": "bc407334e9a6a745de5360395282beb2690adf48", "lessThan": "95342d26f9c6b68a46ab57fa48428a3c4a423dd7", "status": "affected", "versionType": "git"}, {"version": "bc407334e9a6a745de5360395282beb2690adf48", "lessThan": "8648e29e5c01b6b677c704049189287e27255ccb", "status": "affected", "versionType": "git"}, {"version": "bc407334e9a6a745de5360395282beb2690adf48", "lessThan": "f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c", "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/regulator/as3722-regulator.c"], "versions": [{"version": "3.13", "status": "affected"}, {"version": "0", "lessThan": "3.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "3.13", "versionEndExcluding": "5.10.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": 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"https://git.kernel.org/stable/c/8648e29e5c01b6b677c704049189287e27255ccb"}, {"url": "https://git.kernel.org/stable/c/f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c"}], "title": "regulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving dangling of_node pointer", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/regulator/as3722-regulator.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d9b1407477fb736978b04108073180ca84958936", "status": "affected", "version": "bc407334e9a6a745de5360395282beb2690adf48", "versionType": "git"}, {"lessThan": "bd5606e9da1a01a61c7d2f5df36243414a0142be", "status": "affected", "version": "bc407334e9a6a745de5360395282beb2690adf48", "versionType": "git"}, {"lessThan": "0bde4f140e90f87ebd49cd9c884c4bb3f19fe931", "status": "affected", "version": "bc407334e9a6a745de5360395282beb2690adf48", "versionType": "git"}, {"lessThan": "eda08b6bd64f01ca9defbfcc9e0c3e30f46cfc02", "status": "affected", "version": "bc407334e9a6a745de5360395282beb2690adf48", "versionType": "git"}, {"lessThan": "d3c1316d84e0a036890b00ae6e4c0b0b80f70c25", "status": "affected", "version": "bc407334e9a6a745de5360395282beb2690adf48", "versionType": "git"}, {"lessThan": "95342d26f9c6b68a46ab57fa48428a3c4a423dd7", "status": "affected", "version": "bc407334e9a6a745de5360395282beb2690adf48", "versionType": "git"}, {"lessThan": "8648e29e5c01b6b677c704049189287e27255ccb", "status": "affected", "version": "bc407334e9a6a745de5360395282beb2690adf48", "versionType": "git"}, {"lessThan": "f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c", "status": "affected", "version": "bc407334e9a6a745de5360395282beb2690adf48", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/regulator/as3722-regulator.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.13"}, {"lessThan": "3.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.270", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nregulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving dangling of_node pointer\n\nIn as3722_get_regulator_dt_data(), of_get_child_by_name() acquires a\nreference on np, which is then assigned to pdev->dev.of_node. The\nfunction immediately calls of_node_put(np), releasing the reference and\nleaving pdev->dev.of_node as a dangling pointer.\n\nRemove the of_node_put(np) call to let the device hold the reference."}], "id": "CVE-2026-89504", "lastModified": "2026-10-19T09:17:44.617", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-11T20:19:32.673", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0bde4f140e90f87ebd49cd9c884c4bb3f19fe931"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8648e29e5c01b6b677c704049189287e27255ccb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/95342d26f9c6b68a46ab57fa48428a3c4a423dd7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bd5606e9da1a01a61c7d2f5df36243414a0142be"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d3c1316d84e0a036890b00ae6e4c0b0b80f70c25"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d9b1407477fb736978b04108073180ca84958936"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eda08b6bd64f01ca9defbfcc9e0c3e30f46cfc02"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: Dangling pointer in regulator subsystem can lead to denial of service.", "id": "2532102", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532102"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's regulator subsystem. This vulnerability arises from a programming error where a device tree node pointer is released too early, creating a \"dangling pointer\"\u2014a reference to memory that is no longer valid. This can lead to system instability, potentially causing the system to crash, resulting in a Denial of Service (DoS). In some scenarios, this type of memory corruption could also be exploited by a local attacker to achieve arbitrary code execution."], "name": "CVE-2026-89504", "package_state": [{"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-11T19:43:52Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89504\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89504\nhttps://git.kernel.org/stable/c/8648e29e5c01b6b677c704049189287e27255ccb\nhttps://git.kernel.org/stable/c/95342d26f9c6b68a46ab57fa48428a3c4a423dd7\nhttps://git.kernel.org/stable/c/d3c1316d84e0a036890b00ae6e4c0b0b80f70c25\nhttps://git.kernel.org/stable/c/f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bc407334e9a6a745de5360395282beb2690adf48,d3c1316d84e0a036890b00ae6e4c0b0b80f70c25)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bc407334e9a6a745de5360395282beb2690adf48,95342d26f9c6b68a46ab57fa48428a3c4a423dd7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bc407334e9a6a745de5360395282beb2690adf48,8648e29e5c01b6b677c704049189287e27255ccb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bc407334e9a6a745de5360395282beb2690adf48,f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c)"}}], "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": "generic", "value": "3.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.109,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.50,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-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": "2026-09-12T07:30:10.435160+00:00", "updated": "2026-09-21T02:45:08.178718+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}