CVE-2026-43079

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This can lead to an array overflow\nat \"pmu->boxes[die] = box\" in uncore_pci_pmu_register(), which may\ntrigger the warning above or cause other issues."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/x86/events/intel/uncore_discovery.c"], "versions": [{"version": "edae1f06c2cda41edffc93de6aedc8ba8dc883c3", "lessThan": "d18da11a5e21eac7651c8897e5e0908f6c2bc9de", "status": "affected", "versionType": "git"}, {"version": "edae1f06c2cda41edffc93de6aedc8ba8dc883c3", "lessThan": "dfcba8c8674cead6c88a2f269b71aa4efd3d384a", "status": "affected", "versionType": "git"}, {"version": "edae1f06c2cda41edffc93de6aedc8ba8dc883c3", "lessThan": "cfab2c817d2e7e0bee98d66850246ce842ed5f18", "status": "affected", "versionType": "git"}, {"version": "edae1f06c2cda41edffc93de6aedc8ba8dc883c3", "lessThan": "6cfc187d85f18f976d0fe527d4c6f6171542cc19", "status": "affected", "versionType": "git"}, {"version": "edae1f06c2cda41edffc93de6aedc8ba8dc883c3", "lessThan": "f34feda8e0c9535fee3f8870ce8bab53c2798f71", "status": "affected", "versionType": "git"}, {"version": "edae1f06c2cda41edffc93de6aedc8ba8dc883c3", "lessThan": "7a2cb02437d92ed14fe494d8994056d5bd2c72b4", "status": "affected", "versionType": "git"}, {"version": "edae1f06c2cda41edffc93de6aedc8ba8dc883c3", "lessThan": "7b568e9eba2fad89a696f22f0413d44cf4a1f892", "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/events/intel/uncore_discovery.c"], "versions": [{"version": "5.13", "status": "affected"}, {"version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.136", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.83", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.24", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.14", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "5.13", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.6.136"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.12.83"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.18.24"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.19.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d18da11a5e21eac7651c8897e5e0908f6c2bc9de"}, {"url": "https://git.kernel.org/stable/c/dfcba8c8674cead6c88a2f269b71aa4efd3d384a"}, {"url": "https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18"}, {"url": "https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19"}, {"url": "https://git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71"}, {"url": "https://git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4"}, {"url": "https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892"}], "title": "perf/x86/intel/uncore: Skip discovery table for offline dies", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-43079", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:28:04.991226Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T15:32:30.372Z"}}]}}

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vulnerability has been resolved:\n\nperf/x86/intel/uncore: Skip discovery table for offline dies\n\nThis warning can be triggered if NUMA is disabled and the system\nboots with fewer CPUs than the number of CPUs in die 0.\n\nWARNING: CPU: 9 PID: 7257 at uncore.c:1157 uncore_pci_pmu_register+0x136/0x160 [intel_uncore]\n\nCurrently, the discovery table continues to be parsed even if all CPUs\nin the associated die are offline. This can lead to an array overflow\nat \"pmu->boxes[die] = box\" in uncore_pci_pmu_register(), which may\ntrigger the warning above or cause other issues."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nperf/x86/intel/uncore: Omitir tabla de descubrimiento para dies fuera de l\u00ednea\n\nEsta advertencia puede activarse si NUMA est\u00e1 deshabilitado y el sistema arranca con menos CPUs que el n\u00famero de CPUs en el die 0.\n\nADVERTENCIA: CPU: 9 PID: 7257 en uncore.c:1157 uncore_pci_pmu_register+0x136/0x160 [intel_uncore]\n\nActualmente, la tabla de descubrimiento contin\u00faa siendo analizada incluso si todas las CPUs en el die asociado est\u00e1n fuera de l\u00ednea. Esto puede llevar a un desbordamiento de array en \u2019pmu -> boxes[die] = box\u2019 en uncore_pci_pmu_register(), lo que puede activar la advertencia anterior o causar otros problemas."}], "id": "CVE-2026-43079", "lastModified": "2026-11-11T21:10:00.200", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43079", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:28:04.991226Z", "version": "2.0.3"}}]}, "published": "2026-05-06T10:16:20.990", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d18da11a5e21eac7651c8897e5e0908f6c2bc9de"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dfcba8c8674cead6c88a2f269b71aa4efd3d384a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: perf/x86/intel/uncore: Skip discovery table for offline dies", "id": "2466986", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2466986"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-805", "details": ["A flaw was found in the Linux kernel's `perf/x86/intel/uncore` component. This vulnerability occurs when Non-Uniform Memory Access (NUMA) is disabled and the system boots with fewer CPUs than available in a processor die. Under these conditions, the kernel continues to parse a discovery table for offline dies, leading to an array overflow. This issue may result in system instability or other undefined behavior."], "name": "CVE-2026-43079", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43079\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43079\nhttps://lore.kernel.org/linux-cve-announce/2026050613-CVE-2026-43079-d820@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[edae1f06c2cda41edffc93de6aedc8ba8dc883c3,cfab2c817d2e7e0bee98d66850246ce842ed5f18)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[edae1f06c2cda41edffc93de6aedc8ba8dc883c3,6cfc187d85f18f976d0fe527d4c6f6171542cc19)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[edae1f06c2cda41edffc93de6aedc8ba8dc883c3,f34feda8e0c9535fee3f8870ce8bab53c2798f71)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[edae1f06c2cda41edffc93de6aedc8ba8dc883c3,7a2cb02437d92ed14fe494d8994056d5bd2c72b4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[edae1f06c2cda41edffc93de6aedc8ba8dc883c3,7b568e9eba2fad89a696f22f0413d44cf4a1f892)"}}], "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": "5.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.136,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.83,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.24,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.14,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "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": "2026-05-06T12:45:03.596555+00:00", "updated": "2026-06-01T19:15:11.883650+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}