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...

CVE-2026-90299

CVE-2026-90299 affects the Linux kernel BPF subsystem. When CONFIG_FUNCTION_ERROR_INJECTION is disabled, the BPF verifier fails to distinguish whether an attachment target symbol is a kernel function or a BPF program , allowing a sleepable tracing program to attach to a non-kernel BPF program who...