What’s Vulnerable › Vulnerabilities

CVE-2026-92486: bpf: Fix CFI mismatch in task work callback

• 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 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix CFI mismatch in task work callback BPF subprograms use the bpf_callback_t ABI, but task work invokes the callback through a three-argument function pointer. This trips kCFI. Store and invoke the callback as bpf_callback_t.

Affected products

• Linux kernel: 6.18 — 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/2805abd089576799b15092949420e3f8ba97fabd
• https://git.kernel.org/stable/c/85a33c910edc3651f68b17ae3c597c012545958f
• https://git.kernel.org/stable/c/a2cbab47f44e9ea8c5a161ecba1b6bb8535771eb

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