CVE-2021-3739

{"containers": {"cna": {"affected": [{"product": "kernel", "vendor": "n/a", "versions": [{"status": "affected", "version": "Fixed in v5.15-rc1 and above."}]}], "descriptions": [{"lang": "en", "value": "A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires \u2018CAP_SYS_ADMIN\u2019. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-476", "description": "CWE-476 - NULL Pointer Dereference", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-04-07T23:10:44.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1997958"}, {"tags": ["x_refsource_MISC"], "url": "https://ubuntu.com/security/CVE-2021-3739"}, {"tags": ["x_refsource_MISC"], "url": "https://www.openwall.com/lists/oss-security/2021/08/25/3"}, {"tags": ["x_refsource_MISC"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/torvalds/linux/commit/e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://security.netapp.com/advisory/ntap-20220407-0006/"}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T17:01:07.948Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1997958"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://ubuntu.com/security/CVE-2021-3739"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.openwall.com/lists/oss-security/2021/08/25/3"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/torvalds/linux/commit/e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://security.netapp.com/advisory/ntap-20220407-0006/"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2021-3739", "datePublished": "2022-03-07T15:19:47.000Z", "dateReserved": "2021-08-26T00:00:00.000Z", "dateUpdated": "2024-08-03T17:01:07.948Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "kernel", "vendor": "n/a", "versions": [{"status": "affected", "version": "Fixed in v5.15-rc1 and above."}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "58C84E26-8FC0-4C47-949A-2D76C6609653", "versionEndExcluding": "5.4.144", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "86D63648-1023-48B7-A20F-5E52926017A1", "versionEndExcluding": "5.10.62", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "556AE5F6-0159-416A-9725-56BF47FC3167", "versionEndExcluding": "5.13.14", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A7D8D526-4225-4B71-BC25-EE46A1EB8310", "versionEndExcluding": "5.14.1", "versionStartIncluding": "5.14", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "6770B6C3-732E-4E22-BF1C-2D2FD610061C", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*", "matchCriteriaId": "9F9C8C20-42EB-4AB5-BD97-212DEB070C43", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "7FFF7106-ED78-49BA-9EC5-B889E3685D53", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*", "matchCriteriaId": "E63D8B0F-006E-4801-BF9D-1C001BBFB4F9", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "56409CEC-5A1E-4450-AA42-641E459CC2AF", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*", "matchCriteriaId": "B06F4839-D16A-4A61-9BB5-55B13F41E47F", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "108A2215-50FB-4074-94CF-C130FA14566D", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*", "matchCriteriaId": "7AFC73CE-ABB9-42D3-9A71-3F5BC5381E0E", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "32F0B6C0-F930-480D-962B-3F4EFDCC13C7", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*", "matchCriteriaId": "803BC414-B250-4E3A-A478-A3881340D6B8", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "0FEB3337-BFDE-462A-908B-176F92053CEC", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*", "matchCriteriaId": "736AEAE9-782B-4F71-9893-DED53367E102", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "D0B4AD8A-F172-4558-AEC6-FF424BA2D912", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*", "matchCriteriaId": "8497A4C9-8474-4A62-8331-3FE862ED4098", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "234DEFE0-5CE5-4B0A-96B8-5D227CB8ED31", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*", "matchCriteriaId": "CDDF61B7-EC5C-467C-B710-B89F502CD04F", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires \u2018CAP_SYS_ADMIN\u2019. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability."}, {"lang": "es", "value": "Se ha encontrado un fallo de desreferencia de puntero NULL en la funci\u00f3n btrfs_rm_device en el archivo fs/btrfs/volumes.c en el Kernel de Linux, donde el desencadenamiento del bug requiere \"CAP_SYS_ADMIN\". Este fallo permite a un atacante local bloquear el sistema o filtrar informaci\u00f3n interna del kernel. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"}], "id": "CVE-2021-3739", "lastModified": "2026-09-01T18:03:54.870", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 3.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-03-10T17:43:01.463", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1997958"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Patch", "Vendor Advisory"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://github.com/torvalds/linux/commit/e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20220407-0006/"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://ubuntu.com/security/CVE-2021-3739"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "https://www.openwall.com/lists/oss-security/2021/08/25/3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1997958"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch", "Vendor Advisory"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://github.com/torvalds/linux/commit/e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20220407-0006/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://ubuntu.com/security/CVE-2021-3739"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "https://www.openwall.com/lists/oss-security/2021/08/25/3"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Active Defense Lab for reporting this issue.", "bugzilla": {"description": "kernel: null-ptr-dereference bug in btrfs_rm_device in fs/btrfs/volumes.c", "id": "1997958", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1997958"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires \u2018CAP_SYS_ADMIN\u2019. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability.", "A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires \u2018CAP_SYS_ADMIN\u2019. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2021-3739", "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-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:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-08-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3739\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3739\nhttps://lore.kernel.org/linux-btrfs/20210806102415.304717-1-wqu@suse.com/T/#u"], "statement": "There is no shipped kernel version seen affected by this problem. These files are not built in our source code.", "threat_severity": "Low"}

{}