CVE-2025-22087 Information

Apr 17, 2025 cve

Description

In the Linux kernel the following vulnerability has been resolved:

bpf: Fix array bounds error with may_goto

may_goto uses an additional 8 bytes on the stack which causes the interpreters[] array to go out of bounds when calculating index by stack_size.

  1. If a BPF program is rewritten re-evaluate the stack size. For non-JIT cases reject loading directly.

  2. For non-JIT cases calculating interpreters[idx] may still cause out-of-bounds array access and just warn about it.

  3. For jit_requested cases the execution of bpf_func also needs to be warned. So move the definition of function __bpf_prog_ret0_warn out of the macro definition CONFIG_BPF_JIT_ALWAYS_ON.

Reference

https://git.kernel.org/stable/c/19e6817f84000d0b06f09fd69ebd56217842c122 https://git.kernel.org/stable/c/1a86ae57b2600e5749f5f674e9d4296ac00c69a8 https://git.kernel.org/stable/c/4524b7febdd55fb99ae2e1f48db64019fa69e643 https://git.kernel.org/stable/c/6ebc5030e0c5a698f1dd9a6684cddf6ccaed64a0

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