CVE-2025-38518

x86/CPU/AMD: Disable INVLPGB on Zen2

Description

In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Disable INVLPGB on Zen2 AMD Cyan Skillfish (Family 17h, Model 47h, Stepping 0h) has an issue that causes system oopses and panics when performing TLB flush using INVLPGB. However, the problem is that that machine has misconfigured CPUID and should not report the INVLPGB bit in the first place. So zap the kernel's representation of the flag so that nothing gets confused. [ bp: Massage. ]

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/357f121517924e3ec3021f9d0dd0189adcd09867
https://git.kernel.org/stable/c/a74bb5f202dabddfea96abc1328fcedae8aa140a

Frequently Asked Questions

What is the severity of CVE-2025-38518?: CVE-2025-38518 has not yet been assigned a CVSS score.
How to fix CVE-2025-38518?: To fix CVE-2025-38518, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-38518 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-38518 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-38518?: CVE-2025-38518 affects Linux Linux, Linux Linux.

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