CVE-2026-64373

{"id": "CVE-2026-64373", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.0}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "65650b35133ff20f0c9ef0abd5c3c66dbce3ae57", "lessThan": "6d5dd354c37abaf4d60400c55c71f23ba2b33639", "versionType": "git"}, {"status": "affected", "version": "65650b35133ff20f0c9ef0abd5c3c66dbce3ae57", "lessThan": "9103078c7b3091a2fbb52af176f95982ee7dd7f8", "versionType": "git"}, {"status": "affected", "version": "65650b35133ff20f0c9ef0abd5c3c66dbce3ae57", "lessThan": "cd4524ff6567fa4458a5bec4b017105e671d393e", "versionType": "git"}, {"status": "affected", "version": "65650b35133ff20f0c9ef0abd5c3c66dbce3ae57", "lessThan": "73255d702c7560185fd5951aadcf7eb057c2f453", "versionType": "git"}, {"status": "affected", "version": "65650b35133ff20f0c9ef0abd5c3c66dbce3ae57", "lessThan": "a0ef2fc89d28ca62923376c4b8ffaa57136a36be", "versionType": "git"}, {"status": "affected", "version": "65650b35133ff20f0c9ef0abd5c3c66dbce3ae57", "lessThan": "6e175c00c62dca3d91b987015808b5d52e8db2b4", "versionType": "git"}, {"status": "affected", "version": "65650b35133ff20f0c9ef0abd5c3c66dbce3ae57", "lessThan": "a0106b41f9a724868d390b8b3b4ea5ca0e04ea53", "versionType": "git"}, {"status": "affected", "version": "65650b35133ff20f0c9ef0abd5c3c66dbce3ae57", "lessThan": "a9029dd55696c651ee46912afa2a166fa456bb3e", "versionType": "git"}, {"status": "affected", "version": "8bfa06ea6e81bf08d2132d7e70c2b5313b34caf8", "versionType": "git"}, {"status": "affected", "version": "7ccf3b8b7a12dc9da158c2e699c36d04b2496944", "versionType": "git"}, {"status": "affected", "version": "5f466713989250938624afa79dc33bae20920700", "versionType": "git"}, {"status": "affected", "version": "89ab39da1452d272007acc5912d4008047b86706", "versionType": "git"}, {"status": "affected", "version": "cb4b4601f910c78d2b49f637a12ef98b41cb76a9", "versionType": "git"}, {"status": "affected", "version": "4.4.198", "lessThan": "4.5", "versionType": "semver"}, {"status": "affected", "version": "4.9.198", "lessThan": "4.10", "versionType": "semver"}, {"status": "affected", "version": "4.14.151", "lessThan": "4.15", "versionType": "semver"}, {"status": "affected", "version": "4.19.81", "lessThan": "4.20", "versionType": "semver"}, {"status": "affected", "version": "5.3.8", "lessThan": "5.4", "versionType": "semver"}], "programFiles": ["drivers/cpufreq/cpufreq.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.4"}, {"status": "unaffected", "version": "0", "lessThan": "5.4", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.261", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.212", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.178", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.145", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.96", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.39", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.4", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/cpufreq/cpufreq.c"], "defaultStatus": "affected"}]}], "published": "2026-07-25T10:17:20.283", "references": [{"url": "https://git.kernel.org/stable/c/6d5dd354c37abaf4d60400c55c71f23ba2b33639", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6e175c00c62dca3d91b987015808b5d52e8db2b4", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/73255d702c7560185fd5951aadcf7eb057c2f453", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9103078c7b3091a2fbb52af176f95982ee7dd7f8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a0106b41f9a724868d390b8b3b4ea5ca0e04ea53", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a0ef2fc89d28ca62923376c4b8ffaa57136a36be", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a9029dd55696c651ee46912afa2a166fa456bb3e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cd4524ff6567fa4458a5bec4b017105e671d393e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-362"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: Fix hotplug-suspend race during reboot\n\nDuring system reboot, cpufreq_suspend() is called via the\nkernel_restart() -> device_shutdown() path. Unlike the normal system\nsuspend path, the reboot path does not call freeze_processes(), so\nuserspace processes and kernel threads remain active.\n\nThis allows CPU hotplug operations to run concurrently with\ncpufreq_suspend(). The original code has no synchronization with CPU\nhotplug, leading to a race condition where governor_data can be freed\nby the hotplug path while cpufreq_suspend() is still accessing it,\nresulting in a null pointer dereference:\n\n Unable to handle kernel NULL pointer dereference\n Call Trace:\n do_kernel_fault+0x28/0x3c\n cpufreq_suspend+0xdc/0x160\n device_shutdown+0x18/0x200\n kernel_restart+0x40/0x80\n arm64_sys_reboot+0x1b0/0x200\n\nFix this by adding cpus_read_lock()/cpus_read_unlock() to\ncpufreq_suspend() to block CPU hotplug operations while suspend is in\nprogress.\n\n[ rjw: Changelog edits ]"}], "lastModified": "2026-09-08T15:23:15.967", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "052914B9-7C0F-45AD-A5C6-9D8F57ABCD5B", "versionEndExcluding": "4.5", "versionStartIncluding": "4.4.198"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA141B73-7D3F-41E0-963D-6F716290C532", "versionEndExcluding": "4.10", "versionStartIncluding": "4.9.198"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DA55261D-38B7-426F-A2BC-C10A84345D33", "versionEndExcluding": "4.15", "versionStartIncluding": "4.14.151"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EA3CA89D-8A5E-47EA-A6FC-1DC6BE3166E5", "versionEndExcluding": "4.20", "versionStartIncluding": "4.19.81"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "427ABFB4-D713-4023-A92C-151DC0A30CCC", "versionEndExcluding": "5.4", "versionStartIncluding": "5.3.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A94245B8-9422-40E5-B665-36E39CF1AA46", "versionEndExcluding": "5.10.261", "versionStartIncluding": "5.4.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8E99FB01-CD93-41AF-A653-3F450652B9A6", "versionEndExcluding": "5.15.212", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "092233C7-F4E0-40C8-BD4D-A28FE50DFE20", "versionEndExcluding": "6.1.178", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7046B092-F810-4440-ACE6-60218518EECE", "versionEndExcluding": "6.6.145", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "38A8100E-2B1A-462F-AEE9-8901B870FEF2", "versionEndExcluding": "6.12.96", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "914AE4BC-3D59-4C5A-9DB5-9CE327B429F7", "versionEndExcluding": "6.18.39", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42", "versionEndExcluding": "7.1.4", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.4:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4D70AB13-37BE-4BD3-A652-10191F1642E4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.4:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "81C1EF68-9FF9-416E-AFED-59088978150A"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.4:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F0E28D41-AC78-413B-AA08-FB73CAFFC58C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.4:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EEDE6F28-7530-476B-A838-83E5B2D2A2DD"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.4:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7BB18ED4-6619-467C-870F-7671261DBEF2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.4:rc8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D980DAA0-07F8-4C47-B178-0BDDDA234A06"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}