Important: kernel6.12

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: landlock: Fix handling of disconnected directories CVE-2025-68736 In the Linux kernel, the following vulnerability has been resolved: arm64/fpsimd: signal: Fix restoration of SVE context CVE-2026-23102 In the Linu...

UBUNTU-CVE-2026-31413

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix unsound scalar forking in maybeforkscalars for BPFOR maybeforkscalars is called for both BPFAND and BPFOR when the source operand is a constant. When dst has signed range -1, 0, it forks the verifier state: the pushed pa...

CVE-2026-31413 bpf: Fix unsound scalar forking in maybe_fork_scalars() for BPF_OR

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix unsound scalar forking in maybeforkscalars for BPFOR maybeforkscalars is called for both BPFAND and BPFOR when the source operand is a constant. When dst has signed range -1, 0, it forks the verifier state: the pushed pa...

CVE-2026-31413 bpf: Fix unsound scalar forking in maybe_fork_scalars() for BPF_OR

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix unsound scalar forking in maybeforkscalars for BPFOR maybeforkscalars is called for both BPFAND and BPFOR when the source operand is a constant. When dst has signed range -1, 0, it forks the verifier state: the pushed pa...

CVE-2026-31413

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix unsound scalar forking in maybeforkscalars for BPFOR maybeforkscalars is called for both BPFAND and BPFOR when the source operand is a constant. When dst has signed range -1, 0, it forks the verifier state: the pushed pa...

CVE-2026-31413

CVE-2026-31413 — Linux kernel BPF verifier flaw (CVE-joined info from multiple sources) The issue arises in maybe_fork_scalars() when handling ARSH plus AND/OR with a constant in the BPF verifier. The code forks the verifier state; the pushed path previously used env->insn_idx + 1, so it re-ex...

PT-2026-32152

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw in the BPF verifier related to unsound scalar forking in the maybe fork scalars function when handling BPF OR operations. Specifically, the function...