CVE-2021-47311

In the Linux kernel, the following vulnerability has been resolved: net: qcom/emac: fix UAF in emac_remove adpt is netdev private data and it cannot be used after free_netdev() call. Using adpt after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.

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/11e9d163d631198bb3eb41a677a61b499516c0f7	Patch
https://git.kernel.org/stable/c/2b70ca92847c619d6264c7372ef74fcbfd1e048c	Patch
https://git.kernel.org/stable/c/4d04a42b926e682140776e54188f4a44f1f01a81	Patch
https://git.kernel.org/stable/c/8a225a6e07a57a1538d53637cb3d82bd3e477839	Patch
https://git.kernel.org/stable/c/ad297cd2db8953e2202970e9504cab247b6c7cb4	Patch
https://git.kernel.org/stable/c/b1e091331920f8fbfc747dcbd16263fcd71abb2d	Patch
https://git.kernel.org/stable/c/b560521eca03d0a2db6093a5a632cbdd0a0cf833	Patch
https://git.kernel.org/stable/c/11e9d163d631198bb3eb41a677a61b499516c0f7	Patch
https://git.kernel.org/stable/c/2b70ca92847c619d6264c7372ef74fcbfd1e048c	Patch
https://git.kernel.org/stable/c/4d04a42b926e682140776e54188f4a44f1f01a81	Patch
https://git.kernel.org/stable/c/8a225a6e07a57a1538d53637cb3d82bd3e477839	Patch
https://git.kernel.org/stable/c/ad297cd2db8953e2202970e9504cab247b6c7cb4	Patch
https://git.kernel.org/stable/c/b1e091331920f8fbfc747dcbd16263fcd71abb2d	Patch
https://git.kernel.org/stable/c/b560521eca03d0a2db6093a5a632cbdd0a0cf833	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::::::::
	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 19:50

NVD link : CVE-2021-47311

Mitre link : CVE-2021-47311

CVE.ORG link : CVE-2021-47311

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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Using adpt after free_netdev()\ncan cause UAF bug. Fix it by moving free_netdev() at the end of the\nfunction."}, {"lang": "es", "value": " En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net: qcom/emac: corrige UAF en emac_remove adpt son datos privados de netdev y no se pueden usar despu\u00e9s de la llamada a free_netdev(). Usar adpt despu\u00e9s de free_netdev() puede causar un error en UAF. Solucionadlo moviendo free_netdev() al final de la funci\u00f3n."}], "lastModified": "2024-12-26T19:50:44.387", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "142407A7-68FB-47C1-A785-2A31ECA9EF8E", "versionEndExcluding": "4.9.277", "versionStartIncluding": "4.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6A796929-CDBE-45AF-BD44-F357F64AFFCA", "versionEndExcluding": "4.14.241", "versionStartIncluding": "4.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D1C5B0E1-06E7-4615-AA17-02585202D86E", "versionEndExcluding": "4.19.199", "versionStartIncluding": "4.15"}, {"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"}