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CVE-2023-52817

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL In certain types of chips, such as VEGA20, reading the…

Published May 21, 2024CWE-476EPSS 0.24%

Overview

CVE-2023-52817 is a medium-severity vulnerability. It was published on May 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL

In certain types of chips, such as VEGA20, reading the amdgpu_regs_smc file could result in an abnormal null pointer access when the smc_rreg pointer is NULL. Below are the steps to reproduce this issue and the corresponding exception log:

1. Navigate to the directory: /sys/kernel/debug/dri/0

2. Execute command: cat amdgpu_regs_smc

3. Exception Log::

[4005007.702554] BUG: kernel NULL pointer dereference, address: 0000000000000000

[4005007.702562] #PF: supervisor instruction fetch in kernel mode

[4005007.702567] #PF: error_code(0x0010) - not-present page

[4005007.702570] PGD 0 P4D 0

[4005007.702576] Oops: 0010 [#1] SMP NOPTI

[4005007.702581] CPU: 4 PID: 62563 Comm: cat Tainted: G OE 5.15.0-43-generic #46-Ubunt u

[4005007.702590] RIP: 0010:0x0

[4005007.702598] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.

[4005

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/174f62a0aa15c211e60208b41ee9e7cdfb73d455Refgit.kernel.org/stable/c/437e0fa907ba39b4d7eda863c03ea9cf48bd93a9Refgit.kernel.org/stable/c/5104fdf50d326db2c1a994f8b35dcd46e63ae4adRefgit.kernel.org/stable/c/6c1b3d89a2dda79881726bb6e37af19c0936d736Refgit.kernel.org/stable/c/820daf9ffe2b0afb804567b10983fb38bc5ae288Refgit.kernel.org/stable/c/ba3c0796d292de84f2932cc5bbb0f771fc720996Refgit.kernel.org/stable/c/bf2d51eedf03bd61e3556e35d74d49e2e6112398Refgit.kernel.org/stable/c/f475d5502f33a6c5b149b0afe96316ad1962a64aRefgit.kernel.org/stable/c/174f62a0aa15c211e60208b41ee9e7cdfb73d455Refgit.kernel.org/stable/c/437e0fa907ba39b4d7eda863c03ea9cf48bd93a9

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52817?

CVE-2023-52817 is a medium-severity vulnerability. It was published on May 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-52817?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-52817?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-52817?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52817 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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