DEBIAN-CVE-2026-89991

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix infinite loop in pcpufreelist push with one possible CPU pcpufreelistpush can loop forever when only one CPU is possible and an NMI re-enters pcpufreelistpush while the interrupted context holds that CPU's freelist lock...

CVE-2026-89991

CVE-2026-89991 is a bug in the Linux kernel BPF subsystem affecting __pcpu_freelist_push(). When only one CPU is possible (e.g., CONFIG_SMP=n or nr_cpus=1), an NMI re-enters pcpu_freelist_push() while the interrupted context already holds that CPU's freelist lock. The fallback loop skips the curr...

EUVD-2026-80599

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix infinite loop in pcpufreelist push with one possible CPU pcpufreelistpush can loop forever when only one CPU is possible and an NMI re-enters pcpufreelistpush while the interrupted context holds that CPU's freelist lock...