CVE-2021-47601 tee: amdtee: fix an IS_ERR() vs NULL bug

What is CVE-2021-47601?

CVE-2021-47601 is a medium-severity vulnerability in Linux kernel, published on 19 Jun 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:

tee: amdtee: fix an IS_ERR() vs NULL bug

The __get_free_pages() function does not return error pointers it returns NULL so fix this condition to avoid a NULL dereference.

Weakness: CWE-476

Which versions are affected by CVE-2021-47601?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2021-47601?

Apply the vendor's patch.

Is CVE-2021-47601 being exploited?

There is no known exploitation of CVE-2021-47601 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-2021-47601, GHSA-hwf6-8434-65rv, UBUNTU-CVE-2021-47601.