CVE-2020-25220

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "The Linux kernel 4.9.x before 4.9.233, 4.14.x before 4.14.194, and 4.19.x before 4.19.140 has a use-after-free because skcd->no_refcnt was not considered during a backport of a CVE-2020-14356 patch. This is related to the cgroups feature."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-10-31T17:06:25.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1868453"}, {"tags": ["x_refsource_MISC"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26e"}, {"tags": ["x_refsource_MISC"], "url": "https://www.spinics.net/lists/stable/msg405099.html"}, {"tags": ["x_refsource_MISC"], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233"}, {"tags": ["x_refsource_MISC"], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194"}, {"tags": ["x_refsource_MISC"], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://security.netapp.com/advisory/ntap-20201001-0004/"}, {"name": "[debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html"}, {"name": "[debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2020-25220", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The Linux kernel 4.9.x before 4.9.233, 4.14.x before 4.14.194, and 4.19.x before 4.19.140 has a use-after-free because skcd->no_refcnt was not considered during a backport of a CVE-2020-14356 patch. This is related to the cgroups feature."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1868453", "refsource": "MISC", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1868453"}, {"name": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26e", "refsource": "MISC", "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26e"}, {"name": "https://www.spinics.net/lists/stable/msg405099.html", "refsource": "MISC", "url": "https://www.spinics.net/lists/stable/msg405099.html"}, {"name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233", "refsource": "MISC", "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233"}, {"name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194", "refsource": "MISC", "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194"}, {"name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140", "refsource": "MISC", "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140"}, {"name": "https://security.netapp.com/advisory/ntap-20201001-0004/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20201001-0004/"}, {"name": "[debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html"}, {"name": "[debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T15:33:05.300Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1868453"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26e"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.spinics.net/lists/stable/msg405099.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://security.netapp.com/advisory/ntap-20201001-0004/"}, {"name": "[debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html"}, {"name": "[debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2020-25220", "datePublished": "2020-09-10T01:20:12.000Z", "dateReserved": "2020-09-10T00:00:00.000Z", "dateUpdated": "2024-08-04T15:33:05.300Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "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": "899D75AC-5047-41DC-8353-A75882D944B8", "versionEndExcluding": "4.9.233", "versionStartIncluding": "4.9.0", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8E9103C0-B752-4E94-9E6D-D30739C34015", "versionEndExcluding": "4.14.194", "versionStartIncluding": "4.14", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0B7FDEEE-BD71-426A-A2A8-F0DF249CDDE2", "versionEndExcluding": "4.19.140", "versionStartIncluding": "4.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Linux kernel 4.9.x before 4.9.233, 4.14.x before 4.14.194, and 4.19.x before 4.19.140 has a use-after-free because skcd->no_refcnt was not considered during a backport of a CVE-2020-14356 patch. This is related to the cgroups feature."}, {"lang": "es", "value": "El kernel de Linux versiones 4.9.x anteriores a 4.9.233, versiones 4.14.x anteriores a 4.14.194 y versiones 4.19.x anteriores a 4.19.140, presenta un uso de la memoria previamente liberada porque skcd-)no_refcnt no fue considerado durante un backport de un parche del CVE-2020-14356. Esto est\u00e1 relacionado con la funcionalidad cgroups"}], "id": "CVE-2020-25220", "lastModified": "2026-06-17T03:06:36.730", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "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"}]}, "published": "2020-09-10T02:15:11.550", "references": [{"source": "cve@mitre.org", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1868453"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26e"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20201001-0004/"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "https://www.spinics.net/lists/stable/msg405099.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1868453"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20201001-0004/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "https://www.spinics.net/lists/stable/msg405099.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: use-after-free because skcd->no_refcnt was not considered during the backport of CVE-2020-14356", "id": "1877920", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1877920"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["The Linux kernel 4.9.x before 4.9.233, 4.14.x before 4.14.194, and 4.19.x before 4.19.140 has a use-after-free because skcd->no_refcnt was not considered during a backport of a CVE-2020-14356 patch. This is related to the cgroups feature.", "A flaw was found in the Linux kernel. The cgroups feature is affected by a use-after-free memory flaw that was not considered during the backport for CVE-2020-14356. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."], "name": "CVE-2020-25220", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"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-alt", "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:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2020-07-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-25220\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-25220"], "threat_severity": "Moderate"}

{}