CVE-2021-47306

In the Linux kernel, the following vulnerability has been resolved: net: fddi: fix UAF in fza_probe fp is netdev private data and it cannot be used after free_netdev() call. Using fp after free_netdev() can cause UAF bug. Fix it by moving free_netdev() after error message. TURBOchannel adapter")

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/04b06716838bfc26742dbed3ae1d3697fe5317ee	Patch
https://git.kernel.org/stable/c/bdfbb51f7a437ae8ea91317a5c133ec13adf3c47	Patch
https://git.kernel.org/stable/c/deb7178eb940e2c5caca1b1db084a69b2e59b4c9	Patch
https://git.kernel.org/stable/c/f33605908a9b6063525e9f68e62d739948c5fccf	Patch
https://git.kernel.org/stable/c/04b06716838bfc26742dbed3ae1d3697fe5317ee	Patch
https://git.kernel.org/stable/c/bdfbb51f7a437ae8ea91317a5c133ec13adf3c47	Patch
https://git.kernel.org/stable/c/deb7178eb940e2c5caca1b1db084a69b2e59b4c9	Patch
https://git.kernel.org/stable/c/f33605908a9b6063525e9f68e62d739948c5fccf	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.14:rc1::::::

History

No history.

Information

Published : 2024-05-21 15:15

Updated : 2024-12-26 18:43

NVD link : CVE-2021-47306

Mitre link : CVE-2021-47306

CVE.ORG link : CVE-2021-47306

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

{"id": "CVE-2021-47306", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2024-05-21T15:15:18.250", "references": [{"url": "https://git.kernel.org/stable/c/04b06716838bfc26742dbed3ae1d3697fe5317ee", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bdfbb51f7a437ae8ea91317a5c133ec13adf3c47", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/deb7178eb940e2c5caca1b1db084a69b2e59b4c9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f33605908a9b6063525e9f68e62d739948c5fccf", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/04b06716838bfc26742dbed3ae1d3697fe5317ee", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/bdfbb51f7a437ae8ea91317a5c133ec13adf3c47", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/deb7178eb940e2c5caca1b1db084a69b2e59b4c9", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/f33605908a9b6063525e9f68e62d739948c5fccf", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fddi: fix UAF in fza_probe\n\nfp is netdev private data and it cannot be\nused after free_netdev() call. Using fp after free_netdev()\ncan cause UAF bug. Fix it by moving free_netdev() after error message.\n\nTURBOchannel adapter\")"}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: fddi: corrige UAF en fza_probe fp son datos privados de netdev y no se pueden usar despu\u00e9s de la llamada a free_netdev(). Usar fp despu\u00e9s de free_netdev() puede causar un error UAF. Solucionadlo moviendo free_netdev() despu\u00e9s del mensaje de error. Adaptador de canal TURBO\")"}], "lastModified": "2024-12-26T18:43:39.927", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3EF7BA79-262D-4A55-A0A1-E0D0BCA7C320", "versionEndExcluding": "5.4.135", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "08E2D438-D50E-43C5-AF10-D62FE49B5815", "versionEndExcluding": "5.10.53", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "808DF8D9-4913-4CC7-B91F-B4146556B7ED", "versionEndExcluding": "5.13.5", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "71268287-21A8-4488-AA4F-23C473153131"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}