What’s Vulnerable › Vulnerabilities

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

• 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: 2024-06-19 · updated 2026-06-17
• Weakness: CWE-476

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.

Affected products

• Linux kernel: from 5.6 before 5.10.88; from 5.11 before 5.15.11 — fixed in 5.10.88, 5.15.11

How to fix

Upgrade to a fixed version: Linux kernel 5.10.88, 5.15.11. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/640e28d618e82be78fb43b4bf5113bc90d6aa442
• https://git.kernel.org/stable/c/832f3655c6138c23576ed268e31cc76e0f05f2b1
• https://git.kernel.org/stable/c/9d7482771fac8d8e38e763263f2ca0ca12dd22c6
• https://git.kernel.org/stable/c/640e28d618e82be78fb43b4bf5113bc90d6aa442
• https://git.kernel.org/stable/c/832f3655c6138c23576ed268e31cc76e0f05f2b1
• https://git.kernel.org/stable/c/9d7482771fac8d8e38e763263f2ca0ca12dd22c6

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