{"api_version":"1","generated_at":"2026-05-11T08:15:07+00:00","cve":"CVE-2026-43079","urls":{"html":"https://cve.report/CVE-2026-43079","api":"https://cve.report/api/cve/CVE-2026-43079.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43079","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43079"},"summary":{"title":"perf/x86/intel/uncore: Skip discovery table for offline dies","description":"In the Linux kernel, the following 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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-06 10:16:20","updated_at":"2026-05-06 13:08:07"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4","name":"https://git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18","name":"https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19","name":"https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71","name":"https://git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892","name":"https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43079","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43079","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected edae1f06c2cda41edffc93de6aedc8ba8dc883c3 cfab2c817d2e7e0bee98d66850246ce842ed5f18 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected edae1f06c2cda41edffc93de6aedc8ba8dc883c3 6cfc187d85f18f976d0fe527d4c6f6171542cc19 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected edae1f06c2cda41edffc93de6aedc8ba8dc883c3 f34feda8e0c9535fee3f8870ce8bab53c2798f71 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected edae1f06c2cda41edffc93de6aedc8ba8dc883c3 7a2cb02437d92ed14fe494d8994056d5bd2c72b4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected edae1f06c2cda41edffc93de6aedc8ba8dc883c3 7b568e9eba2fad89a696f22f0413d44cf4a1f892 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.13","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.136 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.83 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.24 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.14 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/events/intel/uncore_discovery.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"cfab2c817d2e7e0bee98d66850246ce842ed5f18","status":"affected","version":"edae1f06c2cda41edffc93de6aedc8ba8dc883c3","versionType":"git"},{"lessThan":"6cfc187d85f18f976d0fe527d4c6f6171542cc19","status":"affected","version":"edae1f06c2cda41edffc93de6aedc8ba8dc883c3","versionType":"git"},{"lessThan":"f34feda8e0c9535fee3f8870ce8bab53c2798f71","status":"affected","version":"edae1f06c2cda41edffc93de6aedc8ba8dc883c3","versionType":"git"},{"lessThan":"7a2cb02437d92ed14fe494d8994056d5bd2c72b4","status":"affected","version":"edae1f06c2cda41edffc93de6aedc8ba8dc883c3","versionType":"git"},{"lessThan":"7b568e9eba2fad89a696f22f0413d44cf4a1f892","status":"affected","version":"edae1f06c2cda41edffc93de6aedc8ba8dc883c3","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/events/intel/uncore_discovery.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.13"},{"lessThan":"5.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.136","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.83","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.24","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.14","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.136","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.83","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.24","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.14","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"5.13","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following 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."}],"providerMetadata":{"dateUpdated":"2026-05-06T07:40:15.767Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43079","datePublished":"2026-05-06T07:40:15.767Z","dateReserved":"2026-05-01T14:12:55.983Z","dateUpdated":"2026-05-06T07:40:15.767Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-06 10:16:20","lastModifiedDate":"2026-05-06 13:08:07","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43079","Ordinal":"1","Title":"perf/x86/intel/uncore: Skip discovery table for offline dies","CVE":"CVE-2026-43079","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43079","Ordinal":"1","NoteData":"In the Linux kernel, the following 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.","Type":"Description","Title":"perf/x86/intel/uncore: Skip discovery table for offline dies"}]}}}