CVE-2021-47002

SUNRPC: Fix null pointer dereference in svc_rqst_free()

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")

References

Link	Tags
https://git.kernel.org/stable/c/3de81c1e84bf84803308da3272a829a7655c5336	patch
https://git.kernel.org/stable/c/1e10f58f1c9a6b667b045513c7a4e6111c24fe7c	patch
https://git.kernel.org/stable/c/c664aaec9aee544538a78ba4893a44bc73a6d742	patch
https://git.kernel.org/stable/c/b9f83ffaa0c096b4c832a43964fe6bff3acffe10	patch

Frequently Asked Questions

What is the severity of CVE-2021-47002?: CVE-2021-47002 has been scored as a medium severity vulnerability.
How to fix CVE-2021-47002?: To fix CVE-2021-47002, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-47002 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-47002 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-47002?: CVE-2021-47002 affects Linux Linux, Linux Linux.

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Description

Category

CWE-476 – NULL Pointer Dereference

References

Frequently Asked Questions