CVE-2025-22087 bpf: Fix array bounds error with may_goto
A Linux kernel BPF vulnerability allows out-of-bounds memory access via may_goto, potentially enabling code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-22087?
CVE-2025-22087 is a high-severity memory corruption vulnerability in Linux kernel, published on 16 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-125
Which versions are affected by CVE-2025-22087?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-22087?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-22087 being exploited?
There is no known exploitation of CVE-2025-22087 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-22087, DEBIAN-CVE-2025-22087, GHSA-89pr-66m5-4vwv, UBUNTU-CVE-2025-22087.