https://nvd.nist.gov/vuln/detail/CVE-2026-53359

Bit of a scary sounding one, my impression is that this is probably (for now) one of those ones where the effort is massive to exploit and to actually get root from a guest you have to calculate the displaced atoms from a gravitational wave while standing on 1 leg eating lemons.... But as with the batch of local privilege escalation exploits, it has existed for 10 years undetected.

So let's hope this does not bring a wave of similar findings and daily patching.

Basically if you have nested KVM enabled for guests, your hypervisors are vulnerable.

No exploit in the wild yet I think, but I am sure that will change.

I am exploring live patching for TierHive because frankly I don't want to reboot everything, but if I must, I will.

Please... Don't become a trend.