{"dataType": "CVE_RECORD", "dataVersion": "5.0", "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"}, "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"}}}}

{"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"}], "id": "CVE-2022-4696", "lastModified": "2023-11-07T03:58:36.397", "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": "nvd@nist.gov", "type": "Primary"}, {"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": "cve-coordination@google.com", "type": "Secondary"}]}, "published": "2023-01-11T13:15:09.307", "references": [{"source": "cve-coordination@google.com", "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": "cve-coordination@google.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://kernel.dance/#75454b4bbfc7e6a4dd8338556f36ea9107ddf61a"}], "sourceIdentifier": "cve-coordination@google.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-763"}], "source": "cve-coordination@google.com", "type": "Secondary"}]}

{}