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...

CVE-2026-74337

A flaw was found in the Linux kernel, specifically within the BPF Berkeley Packet Filter subsystem. This vulnerability allows NMI Non-Maskable Interrupt and tracepoint BPF programs to re-enter certain internal locks, known as LRU Least Recently Used locks, while they are already held. This re-ent...

CVE-2026-74337

CVE-2026-74337 describes a Linux kernel vulnerability where NMI/tracepoint BPF programs could re-enter per-CPU or global LRU locks held by bpf_lru_pop_free()/push_free(), causing AA-deadlock. The fix converts LRU lock sites to rqspinlock_t and adds a recovery path for failure windows to avoid nod...

Linux Distros Unpatched Vulnerability : CVE-2026-74337

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Fix NMI/tracepoint re-entry deadlock on lru locks NMI and tracepoint BPF programs can re-enter the per-CPU or global LRU lock that bpflrupopfree/pushfree...