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and\nrdp's->rdp_gp->nocb_gp_kthread is still valid.\n\nThis will cause the subsequent re-offload operation of this offline\nCPU, which will pass the conditional check and the kthread_unpark()\nwill access invalid rdp's->nocb_cb_kthread pointer.\n\nThis commit therefore use rdp's->nocb_gp_kthread instead of\nrdp_gp's->nocb_gp_kthread for safety check."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/rcu/tree_nocb.h"], "versions": [{"version": "3a5761dc025da47960755ac64d9fbf1c32e8cd80", "lessThan": "b097ae798298885695c339d390b48b4e39619fa7", "status": "affected", "versionType": "git"}, {"version": "3a5761dc025da47960755ac64d9fbf1c32e8cd80", "lessThan": "3da45ec1e485a1a5ad31fe9ddd467c7ee5ae4ef9", "status": "affected", "versionType": "git"}, {"version": "3a5761dc025da47960755ac64d9fbf1c32e8cd80", "lessThan": "cce3d027227c69e85896af9fbc6fa9af5c68f067", 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{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.15.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.16.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b097ae798298885695c339d390b48b4e39619fa7"}, {"url": "https://git.kernel.org/stable/c/3da45ec1e485a1a5ad31fe9ddd467c7ee5ae4ef9"}, {"url": "https://git.kernel.org/stable/c/cce3d027227c69e85896af9fbc6fa9af5c68f067"}, {"url": "https://git.kernel.org/stable/c/1c951683a720b17c9ecaad1932bc95b29044611f"}, {"url": "https://git.kernel.org/stable/c/9b5ec8e6b31755288a07b3abeeab8cd38e9d3c9d"}, {"url": "https://git.kernel.org/stable/c/1bba3900ca18bdae28d1b9fa10f16a8f8cb2ada1"}], "title": "rcu/nocb: Fix 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{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1936DB45-ECC5-4A1A-A924-0D4E14DFE578", "versionEndExcluding": "6.12.43", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BC242347-F722-43AE-B910-BE0B22386977", "versionEndExcluding": "6.15.11", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BD7C087D-2415-4521-B624-30003352F899", "versionEndExcluding": "6.16.2", "versionStartIncluding": "6.16", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrcu/nocb: Fix possible invalid rdp's->nocb_cb_kthread pointer access\n\nIn the preparation stage of CPU online, if the corresponding\nthe rdp's->nocb_cb_kthread does not exist, will be created,\nthere is a situation where the rdp's rcuop kthreads creation fails,\nand then de-offload this CPU's rdp, does not assign this CPU's\nrdp->nocb_cb_kthread pointer, but this rdp's->nocb_gp_rdp and\nrdp's->rdp_gp->nocb_gp_kthread is still valid.\n\nThis will cause the subsequent re-offload operation of this offline\nCPU, which will pass the conditional check and the kthread_unpark()\nwill access invalid rdp's->nocb_cb_kthread pointer.\n\nThis commit therefore use rdp's->nocb_gp_kthread instead of\nrdp_gp's->nocb_gp_kthread for safety check."}], "id": "CVE-2025-38704", "lastModified": "2026-03-25T11:16:11.683", "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": "2025-09-04T16:15:39.263", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1bba3900ca18bdae28d1b9fa10f16a8f8cb2ada1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1c951683a720b17c9ecaad1932bc95b29044611f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3da45ec1e485a1a5ad31fe9ddd467c7ee5ae4ef9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9b5ec8e6b31755288a07b3abeeab8cd38e9d3c9d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b097ae798298885695c339d390b48b4e39619fa7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cce3d027227c69e85896af9fbc6fa9af5c68f067"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: rcu/nocb: Fix possible invalid rdp's->nocb_cb_kthread pointer access", "id": "2393198", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2393198"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-38704", "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": "2025-09-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38704\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38704\nhttps://lore.kernel.org/linux-cve-announce/2025090454-CVE-2025-38704-4353@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-09-05T14:02:35.069633+00:00", "updated": "2025-09-05T14:02:35.069686+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}