CVE-2021-47624

In the Linux kernel, the following vulnerability has been resolved: net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change The refcount leak issues take place in an error handling path. When the 3rd argument buf doesn't match with "offline", "online" or "remove", the function simply returns -EINVAL and forgets to decrease the reference count of a rpc_xprt object and a rpc_xprt_switch object increased by rpc_sysfs_xprt_kobj_get_xprt() and rpc_sysfs_xprt_kobj_get_xprt_switch(), causing reference count leaks of both unused objects. Fix this issue by jumping to the error handling path labelled with out_put when buf matches none of "offline", "online" or "remove".

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cb	Mailing List Patch
https://git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0f	Mailing List Patch
https://git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18	Mailing List Patch
https://git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cb	Mailing List Patch
https://git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0f	Mailing List Patch
https://git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18	Mailing List Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-07-16 12:15

Updated : 2024-11-21 06:36

NVD link : CVE-2021-47624

Mitre link : CVE-2021-47624

CVE.ORG link : CVE-2021-47624

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-Other

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