CVE-2025-38518 Information

Aug 17, 2025 cve

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. ]

Reference

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

CNNVD-202508-1935 (Published: 2025-08-16)

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