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Change History

In the Linux kernel, the following vulnerability has been resolved:

net/sunrpc: fix potential memory leaks in rpc_sysfs_xprt_state_change()

The issue happens on some error handling paths. When the function
fails to grab the object `xprt`, it simply returns 0, forgetting to
decrease the reference count of another object `xps`, which is
increased by rpc_sysfs_xprt_kobj_get_xprt_switch(), causing refcount
leaks. Also, the function forgets to check whether `xps` is valid
before using it, which may result in NULL-dereferencing issues.

Fix it by adding proper error handling code when either `xprt` or
`xps` is NULL.

https://git.kernel.org/stable/c/76fbeb1662b1c56514325118a07fba74dc4c79fe

https://git.kernel.org/stable/c/bfc48f1b0505ffcb03a6d749139b7577d6b81ae0

https://git.kernel.org/stable/c/c0434f0e058648649250b8ed6078b66d773de723