In the Linux kernel, the following vulnerability has been resolved:

riscv, bpf: Fix potential NULL dereference

The bpf_jit_binary_free() function requires a non-NULL argument. When
the RISC-V BPF JIT fails to converge in NR_JIT_ITERATIONS steps,
jit_data->header will be NULL, which triggers a NULL
dereference. Avoid this by checking the argument, prior calling the
function.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-47486
• https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b
• https://git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d
• https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41