CVE-2022-42896

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[{"other": {"type": "ssvc", "content": {"id": "CVE-2022-42896", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-04-21T13:37:08.196759Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-04-21T13:37:09.564Z"}}], "cna": {"title": "Info Leak in l2cap_core in the Linux Kernel", "source": {"discovery": "EXTERNAL"}, "impacts": [{"capecId": "CAPEC-253", "descriptions": [{"lang": "en", "value": "CAPEC-253 Remote Code Inclusion"}]}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://git.kernel.org", "vendor": "Linux", "product": "Linux Kernel", "versions": [{"status": "affected", "version": "3.0.0", "versionType": "custom", "lessThanOrEqual": "711f8c3fb3db61897080468586b970c87c61d9e4"}], "packageName": "kernel", "defaultStatus": "unaffected"}], "datePublic": "2022-11-02T23:00:00.000Z", "references": [{"url": "https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4"}, {"url": "https://kernel.dance/#711f8c3fb3db61897080468586b970c87c61d9e4"}], "x_generator": {"engine": "Vulnogram 0.1.0-dev"}, "descriptions": [{"lang": "en", "value": "There are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth.\u00a0A remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim.\n\nWe recommend upgrading past commit\u00a0 https://www.google.com/url https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4 https://www.google.com/url \n\n", "supportingMedia": [{"type": "text/html", "value": "<span style=\"background-color: rgb(255, 255, 255);\"><span style=\"background-color: rgb(255, 255, 255);\">There are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth.&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">A remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim.</span><br></span></span><br>We recommend upgrading past commit&nbsp;<a target=\"_blank\" rel=\"nofollow\" href=\"https://www.google.com/url?q=https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732b4e62ba3157a2e&amp;sa=D&amp;source=buganizer&amp;usg=AOvVaw1MgsfyPTiSrqqs3LAs-ZRS\"></a><a target=\"_blank\" rel=\"nofollow\" href=\"https://www.google.com/url?q=https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4&amp;sa=D&amp;source=buganizer&amp;usg=AOvVaw22K1DH0yRHxuiaUXy9_wmV\">https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4</a><br><br>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "providerMetadata": {"orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google", "dateUpdated": "2022-11-23T14:13:44.351Z"}}}, "cveMetadata": {"cveId": "CVE-2022-42896", "state": "PUBLISHED", "dateUpdated": "2026-10-14T18:26:39.400Z", "dateReserved": "2022-10-12T18:30:19.769Z", "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "datePublished": "2022-11-23T14:11:56.811Z", "requesterUserId": "ed9b5bb2-2df1-4aa3-9791-5fb260d88e62", "assignerShortName": "Google"}, "dataVersion": "5.2"}

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Un atacante remoto podr\u00eda ejecutar c\u00f3digo que filtre la memoria del kernel a trav\u00e9s de Bluetooth si se encuentra cerca de la v\u00edctima. Recomendamos actualizar al commit anterior \nhttps://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4"}], "id": "CVE-2022-42896", "lastModified": "2026-10-14T19:16:52.337", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.8, "source": "cve-coordination@google.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-42896", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-04-21T13:37:08.196759Z", "version": "2.0.3"}}]}, "published": "2022-11-23T15:15:10.723", "references": [{"source": "cve-coordination@google.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4"}, {"source": "cve-coordination@google.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://kernel.dance/#711f8c3fb3db61897080468586b970c87c61d9e4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://kernel.dance/#711f8c3fb3db61897080468586b970c87c61d9e4"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-794697.html"}], "sourceIdentifier": "cve-coordination@google.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "cve-coordination@google.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:1332", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-1160.114.2.rt56.1266.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2024-03-14T00:00:00Z"}, {"advisory": "RHSA-2024:1249", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-1160.114.2.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2024-03-12T00:00:00Z"}, {"advisory": "RHSA-2024:1323", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2024-03-13T00:00:00Z"}, {"advisory": "RHSA-2024:0980", "cpe": "cpe:/o:redhat:rhel_aus:7.6", "package": "kernel-0:3.10.0-957.111.1.el7", "product_name": "Red Hat Enterprise Linux 7.6 Advanced Update Support(Disable again in 2026 - SPRHEL-7118)", "release_date": "2024-02-26T00:00:00Z"}, {"advisory": "RHSA-2024:1746", "cpe": "cpe:/o:redhat:rhel_aus:7.7", "package": 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{"advisory": "RHSA-2023:5588", "cpe": "cpe:/a:redhat:rhel_tus:8.2::nfv", "package": "kernel-rt-0:4.18.0-193.116.1.rt13.167.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service", "release_date": "2023-10-10T00:00:00Z"}, {"advisory": "RHSA-2023:5589", "cpe": "cpe:/o:redhat:rhel_tus:8.2", "package": "kernel-0:4.18.0-193.116.1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service", "release_date": "2023-10-10T00:00:00Z"}, {"advisory": "RHSA-2023:5580", "cpe": "cpe:/o:redhat:rhel_e4s:8.2", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions", "release_date": "2023-10-10T00:00:00Z"}, {"advisory": "RHSA-2023:5589", "cpe": "cpe:/o:redhat:rhel_e4s:8.2", "package": "kernel-0:4.18.0-193.116.1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions", "release_date": "2023-10-10T00:00:00Z"}, {"advisory": "RHSA-2023:3461", "cpe": "cpe:/o:redhat:rhel_aus:8.4", "package": "kernel-0:4.18.0-305.91.1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "release_date": "2023-06-06T00:00:00Z"}, {"advisory": "RHSA-2023:3462", "cpe": "cpe:/a:redhat:rhel_tus:8.4::nfv", "package": "kernel-rt-0:4.18.0-305.91.1.rt7.166.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Telecommunications Update Service", "release_date": "2023-06-06T00:00:00Z"}, {"advisory": "RHSA-2023:3461", "cpe": "cpe:/o:redhat:rhel_tus:8.4", "package": "kernel-0:4.18.0-305.91.1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Telecommunications Update Service", "release_date": "2023-06-06T00:00:00Z"}, {"advisory": "RHSA-2023:3461", "cpe": "cpe:/o:redhat:rhel_e4s:8.4", "package": "kernel-0:4.18.0-305.91.1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions", "release_date": "2023-06-06T00:00:00Z"}, {"advisory": "RHSA-2023:3517", "cpe": "cpe:/o:redhat:rhel_e4s:8.4", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions", "release_date": "2023-06-06T00:00:00Z"}, {"advisory": "RHSA-2023:4789", "cpe": "cpe:/o:redhat:rhel_eus:8.6", "package": "kernel-0:4.18.0-372.70.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-08-29T00:00:00Z"}, {"advisory": "RHSA-2023:4888", "cpe": "cpe:/o:redhat:rhel_eus:8.6", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-08-30T00:00:00Z"}, {"advisory": "RHSA-2023:2458", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-284.11.1.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}, {"advisory": "RHSA-2023:2148", "cpe": "cpe:/a:redhat:enterprise_linux:9::nfv", "package": "kernel-rt-0:5.14.0-284.11.1.rt14.296.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}, {"advisory": "RHSA-2023:2458", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-284.11.1.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}, {"advisory": "RHSA-2023:4137", "cpe": "cpe:/a:redhat:rhel_eus:9.0", "package": "kernel-0:5.14.0-70.64.1.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-07-18T00:00:00Z"}, {"advisory": "RHSA-2023:4138", "cpe": "cpe:/a:redhat:rhel_eus:9.0::nfv", "package": "kernel-rt-0:5.14.0-70.64.1.rt21.135.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-07-18T00:00:00Z"}, {"advisory": "RHSA-2023:4230", "cpe": "cpe:/o:redhat:rhel_eus:9.0", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-07-20T00:00:00Z"}, {"advisory": "RHSA-2023:4789", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "kernel-0:4.18.0-372.70.1.el8_6", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2023-08-29T00:00:00Z"}], "bugzilla": {"description": "kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c", "id": "2147364", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2147364"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "status": "verified"}, "cwe": "CWE-416", "details": ["There are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth.\u00a0A remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim.\nWe recommend upgrading past commit\u00a0 https://www.google.com/url https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4 https://www.google.com/url", "A use-after-free flaw was found in the Linux kernel's implementation of logical link control and adaptation protocol (L2CAP), part of the Bluetooth stack in the l2cap_connect and l2cap_le_connect_req functions. An attacker with physical access within the range of standard Bluetooth transmission could execute code leaking kernel memory via Bluetooth if within proximity of the victim."], "mitigation": {"lang": "en:us", "value": "This flaw can be mitigated by disabling Bluetooth on the operating system level. The kernel modules can be prevented from being loaded by using system-wide modprobe rules. For instructions on how to disable Bluetooth on RHEL please refer to https://access.redhat.com/solutions/2682931.\nAlternatively Bluetooth can be disabled within the hardware or at BIOS level which will also provide an effective mitigation as the kernel will not be able to detect that Bluetooth hardware is present on the system."}, "name": "CVE-2022-42896", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2022-11-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-42896\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-42896\nhttps://github.com/google/security-research/security/advisories/GHSA-pf87-6c9q-jvm4"], "threat_severity": "Important"}

{}