CVE-2021-47002 Information

Description

In the Linux kernel the following vulnerability has been resolved:

SUNRPC: Fix null pointer dereference in svc_rqst_free()

When alloc_pages_node() returns null in svc_rqst_alloc() the null rq_scratch_page pointer will be dereferenced when calling put_page() in svc_rqst_free(). Fix it by adding a null check.

Addresses-Coverity: (\Dereference after null check)

Reference

https://git.kernel.org/stable/c/1e10f58f1c9a6b667b045513c7a4e6111c24fe7c https://git.kernel.org/stable/c/c664aaec9aee544538a78ba4893a44bc73a6d742 https://git.kernel.org/stable/c/b9f83ffaa0c096b4c832a43964fe6bff3acffe10