{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72067", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.903Z", "datePublished": "2026-08-15T05:52:20.268Z", "dateUpdated": "2026-08-17T05:39:59.754Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:39:59.754Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpu: hotplug: Preserve per instance callback errors\n\ncpuhp_invoke_callback() unwinds earlier callbacks for the same\nhotplug state when one instance fails. The rollback path currently\nreuses ret, so a successful rollback can hide the original error and\nmake the failed transition look successful.\n\nKeep the rollback result separate from the original error."}], "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 bug is in cpuhp_invoke_callback() during CPU hotplug state transitions, reached only via local kernel paths such as sysfs /sys/devices/system/cpu/cpuN/online, device_online/offline, and cpu_up()/cpu_down() from privileged local callers.\nAC:L - An attacker can reliably trigger the bug by inducing multi-instance callback failure (e.g., -ENOMEM via memory pressure) during CPU online/offline on cloud autoscaled nodes or servers running RAID/padata where rollback callbacks succeed and overwrite the original error.\nPR:L - CPU hotplug is normally admin-initiated, but an unprivileged local user can force multi-instance callback failures through memory exhaustion during system/hypervisor CPU hotplug without needing CAP_SYS_ADMIN or user-namespace admin capabilities.\nUI:N - Exploitation requires no victim interaction beyond normal system operation; it is triggered during kernel CPU hotplug transitions without the user opening files, mounting filesystems, or performing other deliberate actions.\nS:U - The vulnerability corrupts kernel CPU hotplug state-machine consistency and affects kernel subsystems on the same host; it does not cross a VM, container, or IOMMU security boundary to impact a separate authority.\nC:H - Silently completing hotplug after a failed multi-instance rollback leaves subsystems like padata and RAID5 in a state inconsistent with the hotplug machine, which can desynchronize RCU-protected structures and enable kernel memory disclosure primitives.\nI:H - When rollback overwrites the original error with success, cpuhp_up_callbacks()/cpuhp_down_callbacks() proceed and mark the CPU transition complete while multi-instance subsystem callbacks were only partially applied, corrupting kernel integrity and enabling further memory corruption.\nA:H - Proceeding past a failed multi-instance hotplug step while subsystems such as padata, RAID5, or virtio-net instances are left in an inconsistent partially-rolled-back state can cause kernel oops, panic, or hang on production cloud and server systems."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/cpu.c"], "versions": [{"version": "724a86881d03ee5794148e65142e24ed3621be66", "lessThan": "fe9c8d641f6991614d1229a3ffd3e33b879bba9c", "status": "affected", "versionType": "git"}, {"version": "724a86881d03ee5794148e65142e24ed3621be66", "lessThan": "ef39758637cc5b603fb05b625c45a98aa306e338", "status": "affected", "versionType": "git"}, {"version": "724a86881d03ee5794148e65142e24ed3621be66", "lessThan": "95232281512b15338549171ed9a2acf21f946ffb", "status": "affected", "versionType": "git"}, {"version": "724a86881d03ee5794148e65142e24ed3621be66", "lessThan": "7a68257b90d8a9b6d605abc99469ded45ecba63b", "status": "affected", "versionType": "git"}, {"version": "724a86881d03ee5794148e65142e24ed3621be66", "lessThan": "77d4fa8a3ea1c3e8b996ac35e59aee9e77389905", "status": "affected", "versionType": "git"}, {"version": "724a86881d03ee5794148e65142e24ed3621be66", "lessThan": "f77117530fc3f5932ffb107182a6dd34006be9b6", "status": "affected", "versionType": "git"}, {"version": "724a86881d03ee5794148e65142e24ed3621be66", "lessThan": "9f7dc355f62c011e4afe8286cf71130d4bfb9d80", "status": "affected", "versionType": "git"}, {"version": "724a86881d03ee5794148e65142e24ed3621be66", "lessThan": "673db10729fb121ea1b16fe57791a0cb9eac1eb5", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/cpu.c"], "versions": [{"version": "4.14", "status": "affected"}, {"version": "0", "lessThan": "4.14", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "4.14", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/fe9c8d641f6991614d1229a3ffd3e33b879bba9c"}, {"url": "https://git.kernel.org/stable/c/ef39758637cc5b603fb05b625c45a98aa306e338"}, {"url": "https://git.kernel.org/stable/c/95232281512b15338549171ed9a2acf21f946ffb"}, {"url": "https://git.kernel.org/stable/c/7a68257b90d8a9b6d605abc99469ded45ecba63b"}, {"url": "https://git.kernel.org/stable/c/77d4fa8a3ea1c3e8b996ac35e59aee9e77389905"}, {"url": "https://git.kernel.org/stable/c/f77117530fc3f5932ffb107182a6dd34006be9b6"}, {"url": "https://git.kernel.org/stable/c/9f7dc355f62c011e4afe8286cf71130d4bfb9d80"}, {"url": "https://git.kernel.org/stable/c/673db10729fb121ea1b16fe57791a0cb9eac1eb5"}], "title": "cpu: hotplug: Preserve per instance callback errors", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/cpu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "fe9c8d641f6991614d1229a3ffd3e33b879bba9c", "status": "affected", "version": "724a86881d03ee5794148e65142e24ed3621be66", "versionType": "git"}, {"lessThan": "ef39758637cc5b603fb05b625c45a98aa306e338", "status": "affected", "version": "724a86881d03ee5794148e65142e24ed3621be66", "versionType": "git"}, {"lessThan": "95232281512b15338549171ed9a2acf21f946ffb", "status": "affected", "version": "724a86881d03ee5794148e65142e24ed3621be66", "versionType": "git"}, {"lessThan": "7a68257b90d8a9b6d605abc99469ded45ecba63b", "status": "affected", "version": "724a86881d03ee5794148e65142e24ed3621be66", "versionType": "git"}, {"lessThan": "77d4fa8a3ea1c3e8b996ac35e59aee9e77389905", "status": "affected", "version": "724a86881d03ee5794148e65142e24ed3621be66", "versionType": "git"}, {"lessThan": "f77117530fc3f5932ffb107182a6dd34006be9b6", "status": "affected", "version": "724a86881d03ee5794148e65142e24ed3621be66", "versionType": "git"}, {"lessThan": "9f7dc355f62c011e4afe8286cf71130d4bfb9d80", "status": "affected", "version": "724a86881d03ee5794148e65142e24ed3621be66", "versionType": "git"}, {"lessThan": "673db10729fb121ea1b16fe57791a0cb9eac1eb5", "status": "affected", "version": "724a86881d03ee5794148e65142e24ed3621be66", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/cpu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.14"}, {"lessThan": "4.14", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "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\ncpu: hotplug: Preserve per instance callback errors\n\ncpuhp_invoke_callback() unwinds earlier callbacks for the same\nhotplug state when one instance fails. The rollback path currently\nreuses ret, so a successful rollback can hide the original error and\nmake the failed transition look successful.\n\nKeep the rollback result separate from the original error."}], "id": "CVE-2026-72067", "lastModified": "2026-08-17T06:18:05.167", "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"}]}, "published": "2026-08-15T06:21:16.327", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/673db10729fb121ea1b16fe57791a0cb9eac1eb5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/77d4fa8a3ea1c3e8b996ac35e59aee9e77389905"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7a68257b90d8a9b6d605abc99469ded45ecba63b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/95232281512b15338549171ed9a2acf21f946ffb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9f7dc355f62c011e4afe8286cf71130d4bfb9d80"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ef39758637cc5b603fb05b625c45a98aa306e338"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f77117530fc3f5932ffb107182a6dd34006be9b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fe9c8d641f6991614d1229a3ffd3e33b879bba9c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: cpu: hotplug: Preserve per instance callback errors", "id": "2516715", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516715"}, "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-393", "details": ["A flaw was found in the Linux kernel's CPU hotplug mechanism. When the cpuhp_invoke_callback() function attempts to unwind previous operations after a failure, it can incorrectly reuse a return value. This issue allows a successful rollback to mask the original error, causing a failed CPU hotplug transition to appear as if it succeeded. This could lead to the system reporting an incorrect state for CPU hotplug operations."], "name": "CVE-2026-72067", "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": "Out of support scope", "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": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72067\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72067\nhttps://lore.kernel.org/linux-cve-announce/2026081518-CVE-2026-72067-fae7@gregkh/T"], "threat_severity": "Low"}

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