CVE-2021-47050 memory: renesas-rpc-if: fix possible NULL pointer dereference of resource

What is CVE-2021-47050?

CVE-2021-47050 is a medium-severity vulnerability in Linux kernel, published on 28 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

memory: renesas-rpc-if: fix possible NULL pointer dereference of resource

The platform_get_resource_byname() can return NULL which would be immediately dereferenced by resource_size(). Instead dereference it after validating the resource.

Addresses-Coverity: Dereference null return value

Weakness: CWE-476

Which versions are affected by CVE-2021-47050?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2021-47050?

Apply the vendor's patch.

Is CVE-2021-47050 being exploited?

There is no known exploitation of CVE-2021-47050 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2021-47050, GHSA-6xgc-32qf-8pxm, UBUNTU-CVE-2021-47050.