Linux kernel (eBPF): eBPF improper input validation leading to local privilege escalation

CVE-2021-4204Kernel, userspace & hypervisorcurated

Impact

eBPF improper input validation leading to local privilege escalation

Who can reach it

Any tenant process in a container with BPF access

What to do

Livepatchable; otherwise drain + reboot. Set kernel.unprivileged_bpf_disabled=1

References

https://access.redhat.com/security/cve/CVE-2021-4204

This entry is curated: imported from vendor advisories with machine assistance, not yet individually verified. Confirm against your vendor's advisory before acting, and report anything wrong.