Question 1

Who issued the warning to Solana validators?

Accepted Answer

Anza warned mainnet-beta validators on November 2, amplifying guidance from Tim Garcia, the Solana Foundation's validator relations lead.

Question 2

What mitigations should Ubuntu validators apply right now?

Accepted Answer

Garcia recommended blocking inbound TCP packets with IPv4 options, disabling Multipath TCP, and disabling TCP request socket migration until Ubuntu ships a patch.

Question 3

Does this flaw affect every Solana validator?

Accepted Answer

No. The guidance targets validators running Ubuntu, not all Solana validators.

Canonical

Solana validators told to filter traffic over unpatched Linux flaw

One sharp brief.
Every day.

Canonical

Solana validators told to filter traffic over unpatched Linux flaw

One sharp brief.Every day.

One sharp brief.
Every day.