What’s Vulnerable › Vulnerabilities

CVE-2025-38319: drm/amd/pp: Fix potential NULL pointer dereference in atomctrl_initialize_mc_reg_table

• 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: 2025-07-10 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/pp: Fix potential NULL pointer dereference in atomctrl_initialize_mc_reg_table The function atomctrl_initialize_mc_reg_table() and atomctrl_initialize_mc_reg_table_v2_2() does not check the return value of smu_atom_get_data_table(). If smu_atom_get_data_table() fails to retrieve vram_info, it returns NULL which is later dereferenced.

Affected products

• Debian Linux: 11.0
• Linux kernel: from 4.18 before 5.15.186; from 5.16 before 6.1.142; from 6.2 before 6.6.94; from 6.7 before 6.12.34; from 6.13 before 6.15.3 — fixed in 5.15.186, 6.1.142, 6.12.34, 6.15.3, 6.6.94

How to fix

Upgrade to a fixed version: Linux kernel 5.15.186, 6.1.142, 6.12.34, 6.15.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/64f3acc8c7e6809631457b75638601b36dea3129
• https://git.kernel.org/stable/c/7080c20a9139842033ed4af604dc1fa4028593ad
• https://git.kernel.org/stable/c/820116a39f96bdc7d426c33a804b52f53700a919
• https://git.kernel.org/stable/c/85cdcb834fb490731ff2d123f87ca799c57dacf2
• https://git.kernel.org/stable/c/a4ff7391c8b75b1541900bd9d0c238e558c11fb3
• https://git.kernel.org/stable/c/cdf7e1ff99ab06ef15d0b5d1aca5258a4fb62b85
• https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

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