CVE-2021-46940

{"id": "CVE-2021-46940", "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-02-27T19:04:05.927", "references": [{"url": "https://git.kernel.org/stable/c/13a779de4175df602366d129e41782ad7168cef0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/337b1546cde87fb8588ddaedf0201b769baa572a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/dbdf22fc825fdb1d97f23230064e0f9819471628", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ea6803ff2cd1a2d7d880256bf562172b708a76ff", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntools/power turbostat: Fix offset overflow issue in index converting\n\nThe idx_to_offset() function returns type int (32-bit signed), but\nMSR_PKG_ENERGY_STAT is u32 and would be interpreted as a negative number.\nThe end result is that it hits the if (offset < 0) check in update_msr_sum()\nwhich prevents the timer callback from updating the stat in the background when\nlong durations are used. The similar issue exists in offset_to_idx() and\nupdate_msr_sum(). Fix this issue by converting the 'int' to 'off_t' accordingly."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: herramientas/turbostat de potencia: soluciona el problema de desbordamiento de compensaci\u00f3n en la conversi\u00f3n de \u00edndice. La funci\u00f3n idx_to_offset() devuelve el tipo int (32 bits firmado), pero MSR_PKG_ENERGY_STAT es u32 y se interpretar\u00eda como negativo. n\u00famero. El resultado final es que alcanza la verificaci\u00f3n if (offset &lt; 0) en update_msr_sum(), lo que evita que la devoluci\u00f3n de llamada del temporizador actualice la estad\u00edstica en segundo plano cuando se utilizan duraciones prolongadas. Existe un problema similar en offset_to_idx() y update_msr_sum(). Solucione este problema convirtiendo 'int' a 'off_t' en consecuencia."}], "lastModified": "2024-04-10T19:44:37.227", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4E778606-3A80-42DD-996C-5570B1192986", "versionEndExcluding": "5.10.36", "versionStartIncluding": "5.10.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EFB425F0-C28C-4B44-8B4C-AD512AA832DE", "versionEndExcluding": "5.11.20", "versionStartIncluding": "5.11.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C3814FA3-8141-4313-A852-8C4212BE12AD", "versionEndExcluding": "5.12.3", "versionStartIncluding": "5.12.0"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}