CVE-2026-98060

The Linux kernel contains a vulnerability in the BPF subsystem where the resilient lock kfunc argument path fails to enforce a rule regarding rbtree callbacks . Specifically, because __bpf_rbtree_add() keeps parent and link pointers live during comparison callbacks, the root's lock must remain he...

CVE-2026-98037

The Linux kernel contains a vulnerability where a local kptr demoted to PTR_UNTRUSTED after an RCU read-side critical section ends retains the MEM_ALLOC flag. Because type_is_ptr_alloc_obj() recognizes any PTR_TO_BTF_ID with MEM_ALLOC as a live object, a kfunc can erroneously pass a NULL or stale...

EUVD-2026-86690

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject untrusted allocated-object pointers When the final RCU read-side critical section ends, a local kptr is demoted to PTRUNTRUSTED but retains MEMALLOC. The pointer may be NULL or may refer to an object whose lifetime is...

Linux Distros Unpatched Vulnerability : CVE-2026-90195

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Linux Distros Unpatched Vulnerability : CVE-2026-93125

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Reject rdonly/rdwrbufsize kfunc arguments that exceed u32 max checkkfuncargs detects a kfunc argument named rdonlybufsize or rdwrbufsize and stores...

DEBIAN-CVE-2026-93125

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject rdonly/rdwrbufsize kfunc arguments that exceed u32 max checkkfuncargs detects a kfunc argument named rdonlybufsize or rdwrbufsize and stores reg-varoff.value into meta-r0size, a u64, and does not bound it...

CVE-2026-93125

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject rdonly/rdwrbufsize kfunc arguments that exceed u32 max checkkfuncargs detects a kfunc argument named rdonlybufsize or rdwrbufsize and stores reg-varoff.value into meta-r0size, a u64, and does not bound it...

CVE-2026-90195

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...

DEBIAN-CVE-2026-90195

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-2026-90195

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...

CVE-2026-90195 riscv, bpf: Fix missing sign-ext for signed 1-byte and 2-byte kfunc args

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...

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-2026-90195 riscv, bpf: Fix missing sign-ext for signed 1-byte and 2-byte kfunc args

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-2026-90195: Undefined Security Weakness

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-2026-93148: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject MEMALLOC BTF accesses past object bounds BTF struct walks relax the struct-size check for accesses through a trailing flexible array. That is valid for ordinary BTF type walking, but PTRTOBTFID | MEMALLOC values point...

UBUNTU-CVE-2026-72423

In the Linux kernel, the following vulnerability has been resolved: bpf: Guard conntrack opts error writes The conntrack lookup and allocation kfuncs take an opts pointer together with an optssz argument. The verifier checks only the memory range described by optssz, but the wrappers...

CVE-2026-72423

In the Linux kernel, the following vulnerability has been resolved: bpf: Guard conntrack opts error writes The conntrack lookup and allocation kfuncs take an opts pointer together with an optssz argument. The verifier checks only the memory range described by optssz, but the wrappers...

CVE-2026-72423 bpf: Guard conntrack opts error writes

In the Linux kernel, the following vulnerability has been resolved: bpf: Guard conntrack opts error writes The conntrack lookup and allocation kfuncs take an opts pointer together with an optssz argument. The verifier checks only the memory range described by optssz, but the wrappers...

CVE-2026-72423

The CVE-2026-72423 vulnerability affects the Linux kernel’s BPF conntrack error reporting: wrappers for conntrack kfuncs may write to opts->error outside the verifier-checked range, for certain sizes. The issue occurs when using an opts pointer with an accompanying opts__sz argument; the verif...

CVE-2026-72423 bpf: Guard conntrack opts error writes

In the Linux kernel, the following vulnerability has been resolved: bpf: Guard conntrack opts error writes The conntrack lookup and allocation kfuncs take an opts pointer together with an optssz argument. The verifier checks only the memory range described by optssz, but the wrappers...