CVE-2026-72401

Summary

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

bpf: Fix insn_aux_data leak on verifier err_free_env path

When bpf_check() allocates env->insn_aux_data successfully but later fails to allocate env->succ, it jumps directly to err_free_env.

The existing vfree(env->insn_aux_data) sits before the err_free_env label, so that direct jump bypasses it and leaks insn_aux_data.

Move vfree(env->insn_aux_data) into err_free_env so all early and late exit paths release it consistently.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/d8df91756890de058646597367507b239a6d2025
• https://git.kernel.org/stable/c/26490a375cb9be9bac96b5171610fd85ca6c2305

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