CVE-2026-68285

Summary

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

LoongArch: BPF: Fix memory leak in bpf_jit_free()

When bpf_int_jit_compile() is called for subprograms, it returns early during the first pass (!prog->is_func || extra_pass is false), keeping ctx->offset alive for the subsequent extra pass.

If JIT compilation fails for a later subprogram, the BPF core aborts and calls bpf_jit_free() to clean up the first subprogram. However, bpf_jit_free() fails to free jit_data->ctx.offset, which causes a memory leak of the JIT context offsets array.

So fix this by adding the missing kvfree(jit_data->ctx.offset) in bpf_jit_free().

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/f1557e0a64736b63aed24e285108a7bc3b7de294
• https://git.kernel.org/stable/c/47e20d4b3da97ef3881d1e55e43545c22424f3fc

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