CVE-2020-14385

A flaw was found in the Linux kernel before 5.9-rc4. A failure of the file system metadata validator in XFS can cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt. This can lead to the filesystem being shutdown, or otherwise rendered inaccessible until it is remounted, leading to a denial of service. The highest threat from this vulnerability is to system availability.

CVSS v3 5.5 MEDIUM
CVSS v2.0 4.7 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.7^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:M/Au:N/C:N/I:N/A:C

Exploitability : 3.4 / Impact : 6.9

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html	Broken Link
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14385	Issue Tracking Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f4020438fab05364018c91f7e02ebdd192085933	Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html	Mailing List Third Party Advisory
https://usn.ubuntu.com/4576-1/	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.9.0:-::::::
	cpe:2.3:o:linux:linux_kernel:5.9.0:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.9.0:rc2::::::
	cpe:2.3:o:linux:linux_kernel:5.9.0:rc3::::::

Configuration 2 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:20.04::::lts:::
	cpe:2.3:o:debian:debian_linux:9.0:::::::*

History

No history.

Information

Published : 2020-09-15 22:15

Updated : 2024-02-28 17:47

NVD link : CVE-2020-14385

Mitre link : CVE-2020-14385

CVE.ORG link : CVE-2020-14385

JSON object : View

Products Affected

canonical

ubuntu_linux

linux

linux_kernel

debian

debian_linux

CWE

CWE-131

Incorrect Calculation of Buffer Size

{"id": "CVE-2020-14385", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.7, "accessVector": "LOCAL", "vectorString": "AV:L/AC:M/Au:N/C:N/I:N/A:C", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 6.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.4, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}, {"type": "Secondary", "source": "secalert@redhat.com", "cvssData": {"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}]}, "published": "2020-09-15T22:15:13.223", "references": [{"url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html", "tags": ["Broken Link"], "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14385", "tags": ["Issue Tracking", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f4020438fab05364018c91f7e02ebdd192085933", "tags": ["Patch", "Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "https://usn.ubuntu.com/4576-1/", "tags": ["Third Party Advisory"], "source": "secalert@redhat.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-131"}]}, {"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-131"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in the Linux kernel before 5.9-rc4. A failure of the file system metadata validator in XFS can cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt. This can lead to the filesystem being shutdown, or otherwise rendered inaccessible until it is remounted, leading to a denial of service. The highest threat from this vulnerability is to system availability."}, {"lang": "es", "value": "Se encontr\u00f3 un fallo en el kernel de Linux versiones anteriores a 5.9-rc4. Un fallo en el comprobador de metadatos del sistema de archivos en XFS puede causar que un inodo con un atributo extendido v\u00e1lido creado por el usuario sea marcado como corrupto. Esto puede conllevar que el sistema de archivos sea apagado o se vuelva inaccesible hasta que se vuelva a montar, conllevando una denegaci\u00f3n de servicio. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"}], "lastModified": "2023-11-07T03:17:12.303", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C9CA5EDA-9CA4-49FA-AF86-7B150825868E", "versionEndExcluding": "5.9.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B2C150C3-165E-42D6-80D4-87B11340B08C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "21F51360-AF61-433B-9FD9-D7DE742FABF9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AFF43A64-F1B2-49B5-9B1A-3C5287E30CC7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7CD5DFA0-15FB-44C2-8C2F-DCABACB998B7"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "902B8056-9E37-443B-8905-8AA93E2447FB"}, {"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}