CVE-2020-36766

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2020-36766", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2024-09-25T18:00:32.409Z", "dateReserved": "2023-09-18T00:00:00.000Z", "datePublished": "2023-09-18T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2023-09-18T08:10:44.821Z"}, "descriptions": [{"lang": "en", "value": "An issue was discovered in the Linux kernel before 5.8.6. drivers/media/cec/core/cec-api.c leaks one byte of kernel memory on specific hardware to unprivileged users, because of directly assigning log_addrs with a hole in the struct."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/torvalds/linux/commit/6c42227c3467549ddc65efe99c869021d2f4a570"}, {"url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.6"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T17:37:07.297Z"}, "title": "CVE Program Container", "references": [{"url": "https://github.com/torvalds/linux/commit/6c42227c3467549ddc65efe99c869021d2f4a570", "tags": ["x_transferred"]}, {"url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.6", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-09-25T18:00:23.978680Z", "id": "CVE-2020-36766", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-25T18:00:32.409Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://github.com/torvalds/linux/commit/6c42227c3467549ddc65efe99c869021d2f4a570", "tags": ["x_transferred"]}, {"url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.6", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T17:37:07.297Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2020-36766", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-25T18:00:23.978680Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-25T18:00:28.304Z"}}], "cna": {"affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "references": [{"url": "https://github.com/torvalds/linux/commit/6c42227c3467549ddc65efe99c869021d2f4a570"}, {"url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.6"}], "descriptions": [{"lang": "en", "value": "An issue was discovered in the Linux kernel before 5.8.6. drivers/media/cec/core/cec-api.c leaks one byte of kernel memory on specific hardware to unprivileged users, because of directly assigning log_addrs with a hole in the struct."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "text", "description": "n/a"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2023-09-18T08:10:44.821Z"}}}, "cveMetadata": {"cveId": "CVE-2020-36766", "state": "PUBLISHED", "dateUpdated": "2024-09-25T18:00:32.409Z", "dateReserved": "2023-09-18T00:00:00.000Z", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "datePublished": "2023-09-18T00:00:00.000Z", "assignerShortName": "mitre"}, "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1242AC2C-0562-494C-87D2-C588833C8287", "versionEndExcluding": "5.8.6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in the Linux kernel before 5.8.6. drivers/media/cec/core/cec-api.c leaks one byte of kernel memory on specific hardware to unprivileged users, because of directly assigning log_addrs with a hole in the struct."}, {"lang": "es", "value": "Se descubri\u00f3 un problema en el kernel de Linux anterior a 5.8.6. drivers/media/cec/core/cec-api.c pierde un byte de memoria del kernel en hardware espec\u00edfico a usuarios sin privilegios, debido a la asignaci\u00f3n directa de log_addrs con un agujero en la estructura."}], "id": "CVE-2020-36766", "lastModified": "2026-06-17T03:16:10.720", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2020-36766", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-25T18:00:23.978680Z", "version": "2.0.3"}}]}, "published": "2023-09-18T09:15:07.693", "references": [{"source": "cve@mitre.org", "tags": ["Release Notes"], "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.6"}, {"source": "cve@mitre.org", "tags": ["Patch"], "url": "https://github.com/torvalds/linux/commit/6c42227c3467549ddc65efe99c869021d2f4a570"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/torvalds/linux/commit/6c42227c3467549ddc65efe99c869021d2f4a570"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: memory leak in drivers/media/cec/core/cec-api.c", "id": "2239712", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2239712"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "status": "draft"}, "details": ["An issue was discovered in the Linux kernel before 5.8.6. drivers/media/cec/core/cec-api.c leaks one byte of kernel memory on specific hardware to unprivileged users, because of directly assigning log_addrs with a hole in the struct.", "A flaw was found in cec_adap_g_log_addrs in drivers/media/cec/core/cec-api.c in the Linux Kernel. This issue may allow a local attacker to leak one byte of kernel memory on specific hardware to unprivileged users, directly assigning log_addrs with a hole in the structure, causing a kernel information leak problem."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is to skip loading the affected module HDMI Consumer Electronics Control framework driver \"cec\" onto the system until we have a fix available. This can be done by a blacklist mechanism, which will ensure the driver is not loaded at the boot time.\n~~~\nHow do I blacklist a kernel module to prevent it from loading automatically?\nhttps://access.redhat.com/solutions/41278 \n~~~"}, "name": "CVE-2020-36766", "package_state": [{"cpe": "cpe:/a:redhat:cryostat:2", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Cryostat 2"}, {"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": "2023-09-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-36766\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-36766\nhttps://github.com/torvalds/linux/commit/6c42227c3467549ddc65efe99c869021d2f4a570"], "threat_severity": "Low"}

{}