CVE-2026-45989

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45989", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.091Z", "datePublished": "2026-05-27T12:55:41.276Z", "dateUpdated": "2026-06-14T17:46:43.307Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-14T17:46:43.307Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: unittest: fix use-after-free in testdrv_probe()\n\nThe function testdrv_probe() retrieves the device_node from the PCI\ndevice, applies an overlay, and then immediately calls of_node_put(dn).\nThis releases the reference held by the PCI core, potentially freeing\nthe node if the reference count drops to zero. Later, the same freed\npointer 'dn' is passed to of_platform_default_populate(), leading to a\nuse-after-free.\n\nThe reference to pdev->dev.of_node is owned by the device model and\nshould not be released by the driver. Remove the erroneous of_node_put()\nto prevent premature freeing."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/of/unittest.c"], "versions": [{"version": "26409dd045892904b059dc411403e9c8ce7543ca", "lessThan": "0ba03e06f037df704d9b032e36d417633e2326bc", "status": "affected", "versionType": "git"}, {"version": "26409dd045892904b059dc411403e9c8ce7543ca", "lessThan": "d68347b07b9801791c9eaab8f772770b52b8cd5c", "status": "affected", "versionType": "git"}, {"version": "26409dd045892904b059dc411403e9c8ce7543ca", "lessThan": "5b6122a67a295f8a08b7c18d908a1bd974dfaec8", "status": "affected", "versionType": "git"}, {"version": "26409dd045892904b059dc411403e9c8ce7543ca", "lessThan": "6b2023286d2c6ed3bf964fb92e34c9c14d42eb69", "status": "affected", "versionType": "git"}, {"version": "26409dd045892904b059dc411403e9c8ce7543ca", "lessThan": "07fd339b2c253205794bea5d9b4b7548a4546c56", "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/of/unittest.c"], "versions": [{"version": "6.6", "status": "affected"}, {"version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.86", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.27", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.4", "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": "6.6", "versionEndExcluding": "6.6.140"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.12.86"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.18.27"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.0.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0ba03e06f037df704d9b032e36d417633e2326bc"}, {"url": "https://git.kernel.org/stable/c/d68347b07b9801791c9eaab8f772770b52b8cd5c"}, {"url": "https://git.kernel.org/stable/c/5b6122a67a295f8a08b7c18d908a1bd974dfaec8"}, {"url": "https://git.kernel.org/stable/c/6b2023286d2c6ed3bf964fb92e34c9c14d42eb69"}, {"url": "https://git.kernel.org/stable/c/07fd339b2c253205794bea5d9b4b7548a4546c56"}], "title": "of: unittest: fix use-after-free in testdrv_probe()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/of/unittest.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "0ba03e06f037df704d9b032e36d417633e2326bc", "status": "affected", "version": "26409dd045892904b059dc411403e9c8ce7543ca", "versionType": "git"}, {"lessThan": "d68347b07b9801791c9eaab8f772770b52b8cd5c", "status": "affected", "version": "26409dd045892904b059dc411403e9c8ce7543ca", "versionType": "git"}, {"lessThan": "5b6122a67a295f8a08b7c18d908a1bd974dfaec8", "status": "affected", "version": "26409dd045892904b059dc411403e9c8ce7543ca", "versionType": "git"}, {"lessThan": "6b2023286d2c6ed3bf964fb92e34c9c14d42eb69", "status": "affected", "version": "26409dd045892904b059dc411403e9c8ce7543ca", "versionType": "git"}, {"lessThan": "07fd339b2c253205794bea5d9b4b7548a4546c56", "status": "affected", "version": "26409dd045892904b059dc411403e9c8ce7543ca", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/of/unittest.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.6"}, {"lessThan": "6.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.140", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.86", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.27", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C002EFE2-D23C-430B-ACB7-0A4317429511", "versionEndExcluding": "6.6.140", "versionStartIncluding": "6.6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "55DA1C62-9991-451E-B8A8-E0004E00F789", "versionEndExcluding": "6.12.86", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A10AC84F-C058-47D5-85B4-E6E51A613B74", "versionEndExcluding": "6.18.27", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CDB78D6D-22C3-4154-B0D0-94AF1CE5C2E3", "versionEndExcluding": "7.0.4", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: unittest: fix use-after-free in testdrv_probe()\n\nThe function testdrv_probe() retrieves the device_node from the PCI\ndevice, applies an overlay, and then immediately calls of_node_put(dn).\nThis releases the reference held by the PCI core, potentially freeing\nthe node if the reference count drops to zero. Later, the same freed\npointer 'dn' is passed to of_platform_default_populate(), leading to a\nuse-after-free.\n\nThe reference to pdev->dev.of_node is owned by the device model and\nshould not be released by the driver. Remove the erroneous of_node_put()\nto prevent premature freeing."}], "id": "CVE-2026-45989", "lastModified": "2026-06-17T10:52:51.500", "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": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-05-27T14:17:16.413", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/07fd339b2c253205794bea5d9b4b7548a4546c56"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0ba03e06f037df704d9b032e36d417633e2326bc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5b6122a67a295f8a08b7c18d908a1bd974dfaec8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6b2023286d2c6ed3bf964fb92e34c9c14d42eb69"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d68347b07b9801791c9eaab8f772770b52b8cd5c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: of: unittest: fix use-after-free in testdrv_probe()", "id": "2482133", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482133"}, "csaw": false, "cwe": "CWE-911", "details": ["A flaw was found in the Linux kernel, specifically within the `testdrv_probe()` function. This vulnerability, known as a use-after-free, occurs because the system prematurely releases a memory reference and then attempts to access that freed memory. This can be triggered by a local user, potentially leading to system instability, crashes, or in certain situations, allowing an attacker to execute unauthorized code."], "name": "CVE-2026-45989", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-45989\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-45989\nhttps://lore.kernel.org/linux-cve-announce/2026052739-CVE-2026-45989-b32d@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[26409dd045892904b059dc411403e9c8ce7543ca,0ba03e06f037df704d9b032e36d417633e2326bc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[26409dd045892904b059dc411403e9c8ce7543ca,d68347b07b9801791c9eaab8f772770b52b8cd5c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[26409dd045892904b059dc411403e9c8ce7543ca,5b6122a67a295f8a08b7c18d908a1bd974dfaec8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[26409dd045892904b059dc411403e9c8ce7543ca,6b2023286d2c6ed3bf964fb92e34c9c14d42eb69)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[26409dd045892904b059dc411403e9c8ce7543ca,07fd339b2c253205794bea5d9b4b7548a4546c56)"}}], "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": "6.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.140,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.86,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.27,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.4,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1-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": "2026-05-27T18:45:39.824770+00:00", "title": "Linux Kernel PCI Driver Use-After-Free in testdrv_probe()", "updated": "2026-06-18T04:15:15.957770+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}