{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-39681", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.113Z", "datePublished": "2025-09-05T17:20:47.564Z", "dateUpdated": "2025-09-29T05:57:18.226Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-09-29T05:57:18.226Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper\n\nSince\n\n 923f3a2b48bd (\"x86/resctrl: Query LLC monitoring properties once during boot\")\n\nresctrl_cpu_detect() has been moved from common CPU initialization code to\nthe vendor-specific BSP init helper, while Hygon didn't put that call in their\ncode.\n\nThis triggers a division by zero fault during early booting stage on our\nmachines with X86_FEATURE_CQM* supported, where get_rdt_mon_resources() tries\nto calculate mon_l3_config with uninitialized boot_cpu_data.x86_cache_occ_scale.\n\nAdd the missing resctrl_cpu_detect() in the Hygon BSP init helper.\n\n [ bp: Massage commit message. ]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/x86/kernel/cpu/hygon.c"], "versions": [{"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9", "lessThan": "62f12cde10118253348a7540e85606869bd69432", "status": "affected", "versionType": "git"}, {"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9", "lessThan": "873f32201df8876bdb2563e3187e79149427cab4", "status": "affected", "versionType": "git"}, {"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9", "lessThan": "fb81222c1559f89bfe3aa1010f6d112531d55353", "status": "affected", "versionType": "git"}, {"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9", "lessThan": "7207923d8453ebfb35667c1736169f2dd796772e", "status": "affected", "versionType": "git"}, {"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9", "lessThan": "a9e5924daa954c9f585c1ca00358afe71d6781c4", "status": "affected", "versionType": "git"}, {"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9", "lessThan": "d23264c257a70dbe021b43b3bc2ee16134cd2c69", "status": "affected", "versionType": "git"}, {"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9", "lessThan": "d8df126349dad855cdfedd6bbf315bad2e901c2f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/x86/kernel/cpu/hygon.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.242", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.190", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.149", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.103", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.44", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.4", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17", "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": "5.8", "versionEndExcluding": "5.10.242"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "5.15.190"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.1.149"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.6.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.12.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.16.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/62f12cde10118253348a7540e85606869bd69432"}, {"url": "https://git.kernel.org/stable/c/873f32201df8876bdb2563e3187e79149427cab4"}, {"url": "https://git.kernel.org/stable/c/fb81222c1559f89bfe3aa1010f6d112531d55353"}, {"url": "https://git.kernel.org/stable/c/7207923d8453ebfb35667c1736169f2dd796772e"}, {"url": "https://git.kernel.org/stable/c/a9e5924daa954c9f585c1ca00358afe71d6781c4"}, {"url": "https://git.kernel.org/stable/c/d23264c257a70dbe021b43b3bc2ee16134cd2c69"}, {"url": "https://git.kernel.org/stable/c/d8df126349dad855cdfedd6bbf315bad2e901c2f"}], "title": "x86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper\n\nSince\n\n 923f3a2b48bd (\"x86/resctrl: Query LLC monitoring properties once during boot\")\n\nresctrl_cpu_detect() has been moved from common CPU initialization code to\nthe vendor-specific BSP init helper, while Hygon didn't put that call in their\ncode.\n\nThis triggers a division by zero fault during early booting stage on our\nmachines with X86_FEATURE_CQM* supported, where get_rdt_mon_resources() tries\nto calculate mon_l3_config with uninitialized boot_cpu_data.x86_cache_occ_scale.\n\nAdd the missing resctrl_cpu_detect() in the Hygon BSP init helper.\n\n [ bp: Massage commit message. ]"}], "id": "CVE-2025-39681", "lastModified": "2025-09-08T16:25:38.810", "metrics": {}, "published": "2025-09-05T18:15:44.537", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/62f12cde10118253348a7540e85606869bd69432"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7207923d8453ebfb35667c1736169f2dd796772e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/873f32201df8876bdb2563e3187e79149427cab4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a9e5924daa954c9f585c1ca00358afe71d6781c4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d23264c257a70dbe021b43b3bc2ee16134cd2c69"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d8df126349dad855cdfedd6bbf315bad2e901c2f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fb81222c1559f89bfe3aa1010f6d112531d55353"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: x86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper", "id": "2393495", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2393495"}, "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-2025-39681", "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": "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": "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": "2025-09-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-39681\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-39681\nhttps://lore.kernel.org/linux-cve-announce/2025090545-CVE-2025-39681-ac80@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-09-07T15:47:30.955181+00:00", "updated": "2025-09-07T15:47:30.955238+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}