bpf, arm64: Fix off-by-one in check_imm signed range check

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CVE-2026-53036

A flaw was found in the Linux kernel. Specifically, an off-by-one error exists in the BPF Berkeley Packet Filter JIT Just-In-Time compiler when handling immediate values for branch instructions on ARM64 architectures. This vulnerability allows the system to process values outside their intended...

SUSE CVE-2026-23417

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix constant blinding for PROBEMEM32 stores BPFST | BPFPROBEMEM32 immediate stores are not handled by bpfjitblindinsn, allowing user-controlled 32-bit immediates to survive unblinded into JIT-compiled native code when...

CVE-2026-23417

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF component. This vulnerability occurs because the BPFST | BPFPROBEMEM32 immediate stores are not correctly handled by the constant blinding mechanism. As a result, user-controlled 32-bit immediate values can remain unblinded in...