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CVE-2021-47601

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

MEDIUM
5.5
CVSS Score
Published: June 19, 2024 at 02:54 PM UTC
Updated: June 17, 2026 at 04:18 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.11 ≤ v < 5.15.115.6 ≤ v < 5.10.885.6 ≤ v < 5.15.115.6 ≤ v < 5.165.6757cc3e9ff1d72d014096399d6e2bf03974d9da1
Vendor states this is fixed in 640e28d618e82be78fb43b4bf5113bc90d6aa442 (fixed)
Vendor states this is fixed in 832f3655c6138c23576ed268e31cc76e0f05f2b1 (fixed)
Vendor states this is fixed in 9d7482771fac8d8e38e763263f2ca0ca12dd22c6 (fixed)
Vendor states this is fixed in 5.10.88 (unaffected)
Vendor states this is fixed in 5.15.11 (unaffected)
Vendor states this is fixed in 5.16 (unaffected)
Vendor states this is fixed in 5.6 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/640e28d618e82be78fb43b4bf5113bc90d6aa442
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/832f3655c6138c23576ed268e31cc76e0f05f2b1
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9d7482771fac8d8e38e763263f2ca0ca12dd22c6

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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