{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-4696", "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "state": "PUBLISHED", "assignerShortName": "Google", "dateReserved": "2022-12-23T13:11:04.948Z", "datePublished": "2023-01-11T12:33:41.024Z", "dateUpdated": "2024-08-03T01:48:40.470Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "packageName": "kernel", "product": "Linux Kernel", "repo": "https://git.kernel.org", "vendor": "Linux", "versions": [{"lessThanOrEqual": "5.10.159", "status": "affected", "version": "5.7-rc1", "versionType": "custom"}]}], "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "Bing-Jhong Billy Jheng of Starlabs"}], "datePublic": "2022-12-15T05:43:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "There exists a use-after-free vulnerability in the Linux kernel through io_uring and the&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">IORING_OP_SPLICE operation. If&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">IORING_OP_SPLICE is&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current-&gt;nsproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current-&gt;nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above</span></span></span><br>"}], "value": "There exists a use-after-free vulnerability in the Linux kernel through io_uring and the\u00a0IORING_OP_SPLICE operation. If\u00a0IORING_OP_SPLICE is\u00a0missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current->nsproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current->nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above\n"}], "impacts": [{"capecId": "CAPEC-251", "descriptions": [{"lang": "en", "value": "CAPEC-251 Local Code Inclusion"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-763", "description": "CWE-763 Release of Invalid Pointer or Reference", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google", "dateUpdated": "2023-01-11T12:33:41.024Z"}, "references": [{"url": "https://kernel.dance/#75454b4bbfc7e6a4dd8338556f36ea9107ddf61a"}, {"url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=75454b4bbfc7e6a4dd8338556f36ea9107ddf61a"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://security.netapp.com/advisory/ntap-20230223-0003/"}, {"url": "https://kernel.dance/#75454b4bbfc7e6a4dd8338556f36ea9107ddf61a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=75454b4bbfc7e6a4dd8338556f36ea9107ddf61a", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T01:48:40.470Z"}}, {"affected": [{"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "5.7-rc1", "status": "affected", "lessThanOrEqual": "5.10.159", "versionType": "custom"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-08-01T13:26:32.245783Z", "id": "CVE-2022-4696", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-08-01T13:27:43.575Z"}}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8919F320-7EC7-47EF-AFA9-126CDF30AB7B", "versionEndExcluding": "5.12", "versionStartIncluding": "5.10", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "There exists a use-after-free vulnerability in the Linux kernel through io_uring and the\u00a0IORING_OP_SPLICE operation. If\u00a0IORING_OP_SPLICE is\u00a0missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current->nsproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current->nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above\n"}, {"lang": "es", "value": "Existe una vulnerabilidad de use-after-free en el kernel de Linux a trav\u00e9s de io_uring y la operaci\u00f3n IORING_OP_SPLICE. Si a IORING_OP_SPLICE le falta el indicador IO_WQ_WORK_FILES, que indica que la operaci\u00f3n no utilizar\u00e1 current-&gt;nsproxy, por lo que su contador de referencia no aumenta. Esta suposici\u00f3n no siempre es cierta, ya que llamar a io_splice en archivos espec\u00edficos llamar\u00e1 a la funci\u00f3n get_uts, que utilizar\u00e1 current-&gt;nsproxy, lo que provocar\u00e1 una disminuci\u00f3n no v\u00e1lida de su contador de referencia y luego provocar\u00e1 la vulnerabilidad de use-after-free. Recomendamos actualizar a la versi\u00f3n 5.10.160 o superior"}], "id": "CVE-2022-4696", "lastModified": "2024-11-21T07:35:45.190", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "[email protected]", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "[email protected]", "type": "Primary"}]}, "published": "2023-01-11T13:15:09.307", "references": [{"source": "[email protected]", "tags": ["Mailing List", "Patch", "Vendor Advisory"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=75454b4bbfc7e6a4dd8338556f36ea9107ddf61a"}, {"source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"], "url": "https://kernel.dance/#75454b4bbfc7e6a4dd8338556f36ea9107ddf61a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch", "Vendor Advisory"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=75454b4bbfc7e6a4dd8338556f36ea9107ddf61a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://kernel.dance/#75454b4bbfc7e6a4dd8338556f36ea9107ddf61a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.netapp.com/advisory/ntap-20230223-0003/"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-763"}], "source": "[email protected]", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: user-after-free during IORING_OP_SPLICE operation", "id": "2164424", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2164424"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "(CWE-416|CWE-763)", "details": ["There exists a use-after-free vulnerability in the Linux kernel through io_uring and the\u00a0IORING_OP_SPLICE operation. If\u00a0IORING_OP_SPLICE is\u00a0missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current->nsproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current->nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above", "A use-after-free flaw was found in the io_uring subsystem of the Linux kernel. This issue occurs during the IORING_OP_SPLICE operation due to a missing IO_WQ_WORK_FILES flag, leading to an invalid decrease of its reference counter and later causing the use-after-free vulnerability. This flaw allows a local user to crash or potentially escalate their privileges on the system."], "name": "CVE-2022-4696", "package_state": [{"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2022-12-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-4696\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-4696"], "statement": "Red Hat Enterprise Linux is not affected by this flaw as the io_uring (CONFIG_IO_URING) is not enabled in any current shipping kernels.", "threat_severity": "Moderate"}