CVE-2023-4622

{"id": "CVE-2023-4622", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "cve-coordination@google.com", "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": 7.0, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.0}]}, "affected": [{"source": "cve-coordination@google.com", "affectedData": [{"repo": "https://git.kernel.org", "vendor": "Linux", "product": "Kernel", "versions": [{"status": "affected", "version": "4.2", "lessThan": "6.1.47", "versionType": "custom"}], "packageName": "kernel", "defaultStatus": "unaffected"}]}], "published": "2023-09-06T14:15:12.193", "references": [{"url": "http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html", "tags": ["Third Party Advisory"], "source": "cve-coordination@google.com"}, {"url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.1.y&id=790c2f9d15b594350ae9bca7b236f2b1859de02c", "tags": ["Issue Tracking", "Mailing List", "Patch", "Vendor Advisory"], "source": "cve-coordination@google.com"}, {"url": "https://kernel.dance/790c2f9d15b594350ae9bca7b236f2b1859de02c", "tags": ["Patch", "Vendor Advisory"], "source": "cve-coordination@google.com"}, {"url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve-coordination@google.com"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve-coordination@google.com"}, {"url": "https://www.debian.org/security/2023/dsa-5492", "tags": ["Third Party Advisory"], "source": "cve-coordination@google.com"}, {"url": "http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.1.y&id=790c2f9d15b594350ae9bca7b236f2b1859de02c", "tags": ["Issue Tracking", "Mailing List", "Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://kernel.dance/790c2f9d15b594350ae9bca7b236f2b1859de02c", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.debian.org/security/2023/dsa-5492", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "cve-coordination@google.com", "description": [{"lang": "en", "value": "CWE-416"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "A use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege escalation.\n\nThe unix_stream_sendpage() function tries to add data to the last skb in the peer's recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free.\n\nWe recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c."}, {"lang": "es", "value": "Se puede explotar una vulnerabilidad de use-after-free en el componente Linux kernel's af_unix para lograr una escalada de privilegios local. La funci\u00f3n unix_stream_sendpage() intenta a\u00f1adir datos al \u00faltimo skb en la cola peer's recv sin bloquear la cola. Por lo tanto, existe una carrera donde unix_stream_sendpage() podr\u00eda acceder a un skb sin bloqueo que est\u00e1 siendo liberado mediante la recolecci\u00f3n de basura, resultando en use-after-free. Recomendamos actualizar despu\u00e9s del commit 790c2f9d15b594350ae9bca7b236f2b1859de02c."}], "lastModified": "2026-09-11T16:12:18.457", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "93A7B59F-4DC9-4B55-AE8F-58F36A72BCB8", "versionEndExcluding": "4.14.324", "versionStartIncluding": "4.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "39603052-E341-4096-8535-38D44A60E845", "versionEndExcluding": "4.19.293", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1379E40A-2AC3-484E-929A-7F46B6C3B521", "versionEndExcluding": "5.4.255", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9396FFDC-6A0D-44B7-9368-21B456F6D4AE", "versionEndExcluding": "5.10.192", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1415629F-F97B-4880-BA1E-AF3DBB8EF305", "versionEndExcluding": "5.15.128", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2EEA01B0-0151-4E0F-B140-1A441EEDD717", "versionEndExcluding": "6.1.47", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CF8ECF64-40AE-49AB-8315-4D83F9F56ECF", "versionEndExcluding": "6.4.12", "versionStartIncluding": "6.2"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"}, {"criteria": "cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "46D69DCC-AE4D-4EA5-861C-D60951444C6C"}], "operator": "OR"}]}], "sourceIdentifier": "cve-coordination@google.com"}