What’s Vulnerable › Vulnerabilities

CVE-2025-39678: platform/x86/amd/hsmp: Ensure sock->metric_tbl_addr is non-NULL

• 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: 2025-09-05 · updated 2026-10-19
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: platform/x86/amd/hsmp: Ensure sock->metric_tbl_addr is non-NULL If metric table address is not allocated, accessing metrics_bin will result in a NULL pointer dereference, so add a check.

Affected products

• Linux kernel: from 6.7 before 6.12.56; from 6.13 before 6.16.4; 6.17-rc1, 6.17-rc2 — fixed in 6.12.56, 6.16.4

How to fix

Upgrade to a fixed version: Linux kernel 6.12.56, 6.16.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2c78fb287e1f430b929f2e49786518350d15605c
• https://git.kernel.org/stable/c/782977c0d8ba432b6fd3d5d0d87016a523ec1c69
• https://git.kernel.org/stable/c/d47782d5c0cb87b9826041f34505580204ccf703

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