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Unrated severityNVD Advisory· Published Jul 16, 2024· Updated May 21, 2025

net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change

CVE-2021-47624

Description

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".

Affected products

97

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

3

News mentions

0

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