What’s Vulnerable › Vulnerabilities

CVE-2023-52773: drm/amd/display: fix a NULL pointer dereference in amdgpu_dm_i2c_xfer()

• 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: 2024-05-21 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix a NULL pointer dereference in amdgpu_dm_i2c_xfer() When ddc_service_construct() is called, it explicitly checks both the link type and whether there is something on the link which will dictate whether the pin is marked as hw_supported. If the pin isn't set or the link is not set (such as from unloading/reloading amdgpu in an IGT test) then fail the amdgpu_dm_i2c_xfer() call.

Affected products

• Linux kernel: from 6.0 before 6.1.64; from 6.2 before 6.5.13; from 6.6 before 6.6.3 — fixed in 6.1.64, 6.5.13, 6.6.3

How to fix

Upgrade to a fixed version: Linux kernel 6.1.64, 6.5.13, 6.6.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1d07b7e84276777dad3c8cfebdf8e739606f90c9
• https://git.kernel.org/stable/c/5b14cf37b9f01de0b28c6f8960019d4c7883ce42
• https://git.kernel.org/stable/c/b71f4ade1b8900d30c661d6c27f87c35214c398c
• https://git.kernel.org/stable/c/fb5c134ca589fe670430acc9e7ebf2691ca2476d
• https://git.kernel.org/stable/c/1d07b7e84276777dad3c8cfebdf8e739606f90c9
• https://git.kernel.org/stable/c/5b14cf37b9f01de0b28c6f8960019d4c7883ce42
• https://git.kernel.org/stable/c/b71f4ade1b8900d30c661d6c27f87c35214c398c
• https://git.kernel.org/stable/c/fb5c134ca589fe670430acc9e7ebf2691ca2476d

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