gsd-2020-27830
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2020-27830", "description": "A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash.", "id": "GSD-2020-27830", "references": [ "https://www.suse.com/security/cve/CVE-2020-27830.html", "https://www.debian.org/security/2021/dsa-4843", "https://ubuntu.com/security/CVE-2020-27830", "https://advisories.mageia.org/CVE-2020-27830.html", "https://security.archlinux.org/CVE-2020-27830" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2020-27830" ], "details": "A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash.", "id": "GSD-2020-27830", "modified": "2023-12-13T01:22:11.104845Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "secalert@redhat.com", "ID": "CVE-2020-27830", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "kernel", "version": { "version_data": [ { "version_value": "kernel 5.9.14" } ] } } ] }, "vendor_name": "n/a" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-476" } ] } ] }, "references": { "reference_data": [ { "name": "[oss-security] 20201208 Re: Linux kernel NULL-ptr deref bug in spk_ttyio_receive_buf2", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2020/12/08/1" }, { "name": "[oss-security] 20201208 Re: Linux kernel NULL-ptr deref bug in spk_ttyio_receive_buf2", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2020/12/08/4" }, { "name": "DSA-4843", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2021/dsa-4843" }, { "name": "[debian-lts-announce] 20210212 [SECURITY] [DLA 2557-1] linux-4.19 security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html" }, { "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1919900", "refsource": "MISC", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1919900" }, { "name": "https://security.netapp.com/advisory/ntap-20210625-0004/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20210625-0004/" } ] } }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndExcluding": "5.9.14", "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "secalert@redhat.com", "ID": "CVE-2020-27830" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "en", "value": "A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-476" } ] } ] }, "references": { "reference_data": [ { "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1919900", "refsource": "MISC", "tags": [ "Issue Tracking", "Patch", "Third Party Advisory" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1919900" }, { "name": "[oss-security] 20201208 Re: Linux kernel NULL-ptr deref bug in spk_ttyio_receive_buf2", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "http://www.openwall.com/lists/oss-security/2020/12/08/1" }, { "name": "[oss-security] 20201208 Re: Linux kernel NULL-ptr deref bug in spk_ttyio_receive_buf2", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "http://www.openwall.com/lists/oss-security/2020/12/08/4" }, { "name": "DSA-4843", "refsource": "DEBIAN", "tags": [ "Third Party Advisory" ], "url": "https://www.debian.org/security/2021/dsa-4843" }, { "name": "[debian-lts-announce] 20210212 [SECURITY] [DLA 2557-1] linux-4.19 security update", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html" }, { "name": "https://security.netapp.com/advisory/ntap-20210625-0004/", "refsource": "CONFIRM", "tags": [ "Third Party Advisory" ], "url": "https://security.netapp.com/advisory/ntap-20210625-0004/" } ] } }, "impact": { "baseMetricV2": { "acInsufInfo": false, "cvssV2": { "accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 2.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0" }, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "LOW", "userInteractionRequired": false }, "baseMetricV3": { "cvssV3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "exploitabilityScore": 1.8, "impactScore": 3.6 } }, "lastModifiedDate": "2021-09-07T21:59Z", "publishedDate": "2021-05-13T15:15Z" } } }
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Sightings
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Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.