CVE-2024-47676

{"id": "CVE-2024-47676", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-47676", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-21T13:07:59.972172Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "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": "9acad7ba3e25d11f4c96df1b7312ae89e6faca5c", "lessThan": "e897d184a8dd4a4e1f39c8c495598e4d9472776c", "versionType": "git"}, {"status": "affected", "version": "9acad7ba3e25d11f4c96df1b7312ae89e6faca5c", "lessThan": "d59ebc99dee0a2687a26df94b901eb8216dbf876", "versionType": "git"}, {"status": "affected", "version": "9acad7ba3e25d11f4c96df1b7312ae89e6faca5c", "lessThan": "98b74bb4d7e96b4da5ef3126511febe55b76b807", "versionType": "git"}], "programFiles": ["mm/hugetlb.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.9"}, {"status": "unaffected", "version": "0", "lessThan": "6.9", "versionType": "semver"}, {"status": "unaffected", "version": "6.10.13", "versionType": "semver", "lessThanOrEqual": "6.10.*"}, {"status": "unaffected", "version": "6.11.2", "versionType": "semver", "lessThanOrEqual": "6.11.*"}, {"status": "unaffected", "version": "6.12", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["mm/hugetlb.c"], "defaultStatus": "affected"}]}], "published": "2024-10-21T12:15:04.687", "references": [{"url": "https://git.kernel.org/stable/c/98b74bb4d7e96b4da5ef3126511febe55b76b807", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d59ebc99dee0a2687a26df94b901eb8216dbf876", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e897d184a8dd4a4e1f39c8c495598e4d9472776c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/hugetlb.c: fix UAF of vma in hugetlb fault pathway\n\nSyzbot reports a UAF in hugetlb_fault(). This happens because\nvmf_anon_prepare() could drop the per-VMA lock and allow the current VMA\nto be freed before hugetlb_vma_unlock_read() is called.\n\nWe can fix this by using a modified version of vmf_anon_prepare() that\ndoesn't release the VMA lock on failure, and then release it ourselves\nafter hugetlb_vma_unlock_read()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm/hugetlb.c: correcci\u00f3n del UAF de vma en la ruta de error hugetlb Syzbot informa un UAF en hugetlb_fault(). Esto sucede porque vmf_anon_prepare() podr\u00eda eliminar el bloqueo por VMA y permitir que se libere el VMA actual antes de que se llame a hugetlb_vma_unlock_read(). Podemos solucionar esto utilizando una versi\u00f3n modificada de vmf_anon_prepare() que no libere el bloqueo de VMA en caso de error y luego lo liberemos nosotros mismos despu\u00e9s de hugetlb_vma_unlock_read()."}], "lastModified": "2026-08-04T11:20:38.827", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "451C50ED-169E-4E8C-BFD9-95D0C8C3231C", "versionEndExcluding": "6.10.13", "versionStartIncluding": "6.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AB755D26-97F4-43B6-8604-CD076811E181", "versionEndExcluding": "6.11.2", "versionStartIncluding": "6.11"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}