CVE-2021-44879

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://bugzilla.kernel.org/show_bug.cgi?id=215231", "name": "https://bugzilla.kernel.org/show_bug.cgi?id=215231", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3", "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3", "tags": ["Mailing List", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f", "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f", "tags": ["Mailing List", "Patch", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao@kernel.org/T/", "name": "https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao@kernel.org/T/", "tags": ["Mailing List", "Patch", "Vendor Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-476"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-44879", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}}, "publishedDate": "2022-02-14T12:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "5.16.3"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-02-22T18:26Z"}