What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-28 · updated 2026-06-17
• Weakness: CWE-476

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

Affected products

• Linux kernel: from 5.9 before 5.10.37; from 5.11 before 5.11.21; from 5.12 before 5.12.4 — fixed in 5.10.37, 5.11.21, 5.12.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.37, 5.11.21, 5.12.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/59e27d7c94aa02da039b000d33c304c179395801
• https://git.kernel.org/stable/c/71bcc1b4a1743534d8abdcb57ff912e6bc390438
• https://git.kernel.org/stable/c/a74cb41af7dbe019e4096171f8bc641c7ce910ad
• https://git.kernel.org/stable/c/e16acc3a37f09e18835dc5d8014942c2ef6ca957
• https://git.kernel.org/stable/c/59e27d7c94aa02da039b000d33c304c179395801
• https://git.kernel.org/stable/c/71bcc1b4a1743534d8abdcb57ff912e6bc390438
• https://git.kernel.org/stable/c/a74cb41af7dbe019e4096171f8bc641c7ce910ad
• https://git.kernel.org/stable/c/e16acc3a37f09e18835dc5d8014942c2ef6ca957

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