CVE-2021-47372

In the Linux kernel, the following vulnerability has been resolved: net: macb: fix use after free on rmmod plat_dev->dev->platform_data is released by platform_device_unregister(), use of pclk and hclk is a use-after-free. Since device unregister won't need a clk device we adjust the function call sequence to fix this issue. [ 31.261225] BUG: KASAN: use-after-free in macb_remove+0x77/0xc6 [macb_pci] [ 31.275563] Freed by task 306: [ 30.276782] platform_device_release+0x25/0x80

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/1da750d1e2140ef43d64d17f301ff6f41b45541e	Patch
https://git.kernel.org/stable/c/46670fb832ee80943715df618632ca13c2e96f2b	Patch
https://git.kernel.org/stable/c/4ad6f2d23b0f6ac0d3e5f3102a4256d1c86c90f5	Patch
https://git.kernel.org/stable/c/7721221e87d25c9840d9ca6b986dbdc410d5ce2b	Patch
https://git.kernel.org/stable/c/a7d521cc726f30b8e679a6f36d04b18a8ab3c536	Patch
https://git.kernel.org/stable/c/d82d5303c4c539db86588ffb5dc5b26c3f1513e8	Patch
https://git.kernel.org/stable/c/1da750d1e2140ef43d64d17f301ff6f41b45541e	Patch
https://git.kernel.org/stable/c/46670fb832ee80943715df618632ca13c2e96f2b	Patch
https://git.kernel.org/stable/c/4ad6f2d23b0f6ac0d3e5f3102a4256d1c86c90f5	Patch
https://git.kernel.org/stable/c/7721221e87d25c9840d9ca6b986dbdc410d5ce2b	Patch
https://git.kernel.org/stable/c/a7d521cc726f30b8e679a6f36d04b18a8ab3c536	Patch
https://git.kernel.org/stable/c/d82d5303c4c539db86588ffb5dc5b26c3f1513e8	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:5.15:rc1::::::

History

No history.

Information

Published : 2024-05-21 15:15

Updated : 2024-12-26 17:57

NVD link : CVE-2021-47372

Mitre link : CVE-2021-47372

CVE.ORG link : CVE-2021-47372

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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Since device unregister won't\nneed a clk device we adjust the function call sequence to fix this issue.\n\n[ 31.261225] BUG: KASAN: use-after-free in macb_remove+0x77/0xc6 [macb_pci]\n[ 31.275563] Freed by task 306:\n[ 30.276782] platform_device_release+0x25/0x80"}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: macb: corrige el use after free en rmmod plat_dev->dev->platform_data es publicado por platform_device_unregister(), el uso de pclk y hclk es un use after free. Dado que la cancelaci\u00f3n del registro del dispositivo no necesitar\u00e1 un dispositivo clk, ajustamos la secuencia de llamada a la funci\u00f3n para solucionar este problema. [31.261225] ERROR: KASAN: use after free en macb_remove+0x77/0xc6 [macb_pci] [31.275563] Liberado por la tarea 306: [30.276782] platform_device_release+0x25/0x80"}], "lastModified": "2024-12-26T17:57:10.690", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "79890A90-0A92-4B80-83D6-017AD5D48FDE", "versionEndExcluding": "4.14.249"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "21C23429-F802-4256-B3C2-9EEA76AC11FF", "versionEndExcluding": "4.19.209", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "87771E47-210D-48FA-95BC-48A86225B30F", "versionEndExcluding": "5.4.150", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A2A50090-4483-4F44-9147-BF0B012FBF7E", "versionEndExcluding": "5.10.70", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1B31D6C1-A751-438D-906B-0C56B789D498", "versionEndExcluding": "5.14.9", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E46C74C6-B76B-4C94-A6A4-FD2FFF62D644"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}