CVE-2026-90299 bpf: Fix sleepable check for tracing/lsm prog

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix sleepable check for tracing/lsm prog When CONFIGFUNCTIONERRORINJECTION is disabled, a sleepable tracing prog is allowed to attach to 'x64'-alike prefix symbols. It is because the verifier does not verify whether the symb...

EUVD-2026-81862

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject load-acquire from pointers requiring fault protection A BPFLOADACQ is not rewritten to a BPFPROBEMEM load by the verifier, unlike a regular BPFLDX, so the JIT emits a plain load with no exception table entry and a fau...

CVE-2026-90269

CVE-2026-90269 affects the Linux kernel BPF subsystem. The verifier fails to rewrite BPF_LOAD_ACQ (load-acquire) into a BPF_PROBE_MEM load, unlike a regular BPF_LDX . As a result, the JIT emits a plain load with no exception-table entry, so a page fault on that load panics the kernel instead of b...

EUVD-2026-81843

In the Linux kernel, the following vulnerability has been resolved: bpf, cgroup: Fix storage null-ptr-deref after replacing prog Syzkaller reported a storage null-ptr-deref issue after replacing prog. This occurs in the following scenario: 1. prog A, an empty prog, is attached to a cgrp. 2. prog ...

CVE-2026-90250

CVE-2026-90250 is a null pointer dereference vulnerability in the Linux kernel's BPF/cgroup subsystem . The issue occurs when a BPF program using BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE replaces an empty prog via link_update. The root cause is that __cgroup_bpf_replace fails to allocate and assign the...

EUVD-2026-81840

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix mmaplock leak in irqwork path stackmapgetbuildidoffset introduced a per-CPU irqwork to defer mmapreadunlock from NMI context, and bpffindvma later reused the same mmapunlockwork. Both callers only check whether the work ...

CVE-2026-90247

CVE-2026-90247 affects the Linux kernel BPF subsystem . The vulnerability resides in the per-CPU mmap_unlock_work irq_work slot shared by stack_map_get_build_id_offset() and bpf_find_vma(). Because both callers only check whether the work is busy before taking mmap_lock, a nested caller can reuse...

CVE-2026-90217

CVE-2026-90217 affects the Linux kernel BPF verifier during state pruning . The root cause is that an iterator stack slot can be in either the MEM_RCU or PTR_UNTRUSTED state, yet these distinct states were treated as equal, allowing the verifier to incorrectly prune an unsafe execution path . The...

EUVD-2026-81810

In the Linux kernel, the following vulnerability has been resolved: bpf: Compare iterator types during state pruning An iterator stack slot can be MEMRCU or PTRUNTRUSTED. These states must not be equal, or the verifier can prune an unsafe path. Compare the pointer type for STACKITER slots...

CVE-2026-90211

CVE-2026-90211 affects the Linux kernel on the s390x architecture. The vulnerability resides in the BPF JIT compiler's handling of read-modify-write (RMW) atomics on arena pointers. Specifically, bpf_jit_probe_atomic_pre() leaves probe->reg at -1 (the sentinel from bpf_jit_probe_init()), so wh...

EUVD-2026-81804

In the Linux kernel, the following vulnerability has been resolved: bpf, s390: Clear fetch destination on faulting arena atomic Same missing register clear as on riscv64. A RMW atomic on an arena pointer is converted to BPFPROBEATOMIC and gets an exception table entry, but bpfjitprobeatomicpre on...

CVE-2026-90195

This Linux kernel vulnerability affects the RISC-V (RV64) BPF JIT compiler . The RV64 ABI requires sign-extension for signed 1-byte and 2-byte kfunc arguments , but the JIT failed to perform this extension. The bug was previously masked by a state-pruning behavior in commit 7ce090afbf72, which in...

EUVD-2026-81788

In the Linux kernel, the following vulnerability has been resolved: riscv, bpf: Fix missing sign-ext for signed 1-byte and 2-byte kfunc args On RV64, the ABI requires sign-extension for signed 1-byte and 2-byte kfunc args. However, the RV64 JIT currently does not perform sign-extension for such...

CVE-2026-90177

CVE-2026-90177 affects the Linux kernel BPF subsystem. During atomic read-modify-write (RMW) verification, the instruction pointer type is recorded only when the destination is PTR_TO_ARENA. A second code path can reach the same instruction with an ordinary pointer without comparing it against th...

EUVD-2026-81770

In the Linux kernel, the following vulnerability has been resolved: bpf: Check pointer type for all atomic RMW paths Atomic RMW verification records an instruction pointer type only when the current destination is PTRTOARENA. A second path can therefore reach the same instruction with an ordinary...

CVE-2026-90159

CVE-2026-90159 affects the Linux kernel BPF subsystem. The _bpf_setsockopt() and _bpf_getsockopt() helpers call sock_owned_by_me(), which expects the socket lock to be held. However, the BPF_CGROUP_UNIX_GETPEERNAME and BPF_CGROUP_UNIX_GETSOCKNAME hooks execute BPF programs without acquiring that ...

EUVD-2026-81752

In the Linux kernel, the following vulnerability has been resolved: bpf: Disallow bpfg,setsockopt in cgroup UNIX getname hooks bpfsetsockopt and bpfgetsockopt call sockownedbyme for full sockets, so these helpers expect the socket lock to be held. BPFCGROUPUNIXGETPEERNAME and...

EUVD-2026-81750

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject negative optlen in cgroup getsockopt hook A cgroup getsockopt BPF program can shrink ctx-optlen after the kernel getsockopt handler has run. The kernel-buffer variant, used by TCPZEROCOPYRECEIVE, only rejects values...

EUVD-2026-81736

In the Linux kernel, the following vulnerability has been resolved: net: kcm: Hold RCU read lock while running BPF parser kcmparsefuncstrparser calls bpfprogrunpinoncpu which prevents CPU migration, but does not establish an RCU read-side critical section. Consequently, BPF map operations can...

CVE-2026-31413-BPF-Container-Escape

CVE-2026-31413: Un Byte en el Verificador BPF para Escape de Contenedor Encontré un bug de solidez en el verificador BPF de Linux: un + 1 en una llamada pushstack que hace que el verificador omita una instrucción ALU en una ruta bifurcada. Para BPFOR, esto significa que el verificador rastrea dst...