CVE-2021-47286

In the Linux kernel, the following vulnerability has been resolved: bus: mhi: core: Validate channel ID when processing command completions MHI reads the channel ID from the event ring element sent by the device which can be any value between 0 and 255. In order to prevent any out of bound accesses, add a check against the maximum number of channels supported by the controller and those channels not configured yet so as to skip processing of that event ring element.

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/3efec3b4b16fc7af25676a94230a8ab2a3bb867c	Patch
https://git.kernel.org/stable/c/546362a9ef2ef40b57c6605f14e88ced507f8dd0	Patch
https://git.kernel.org/stable/c/aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9	Patch
https://git.kernel.org/stable/c/3efec3b4b16fc7af25676a94230a8ab2a3bb867c	Patch
https://git.kernel.org/stable/c/546362a9ef2ef40b57c6605f14e88ced507f8dd0	Patch
https://git.kernel.org/stable/c/aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9	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:5.14:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.14:rc2::::::

History

No history.

Information

Published : 2024-05-21 15:15

Updated : 2025-04-30 14:26

NVD link : CVE-2021-47286

Mitre link : CVE-2021-47286

CVE.ORG link : CVE-2021-47286

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-787

Out-of-bounds Write

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