What’s Vulnerable › Vulnerabilities

CVE-2026-92519: riscv, bpf: Fix memory leak in bpf_jit_free

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-21

Description

In the Linux kernel, the following vulnerability has been resolved: riscv, 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. Fix this by adding the missing kfree(jit_data->ctx.offset) in bpf_jit_free().

Affected products

• Linux kernel: 6.6 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2a3a29e90021806ea00527f6458cfd2edb58b42a
• https://git.kernel.org/stable/c/369e4635d04801f394d5bd42556f21029e95ff93
• https://git.kernel.org/stable/c/5cadc66b534fe8140441916200a20c7efb06a388
• https://git.kernel.org/stable/c/7285f004293e7dc043c55369c0dbe8350b28cc45
• https://git.kernel.org/stable/c/b594c23f584ab032a5eae809eee81b809dd27330

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