CVE-2025-40319

Summary

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

bpf: Sync pending IRQ work before freeing ring buffer

Fix a race where irq_work can be queued in bpf_ringbuf_commit() but the ring buffer is freed before the work executes. In the syzbot reproducer, a BPF program attached to sched_switch triggers bpf_ringbuf_commit(), queuing an irq_work. If the ring buffer is freed before this work executes, the irq_work thread may accesses freed memory. Calling irq_work_sync(&rb->work) ensures that all pending irq_work complete before freeing the buffer.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux457f44363a8894135c85b7a9afd2bd8196db24ab < 47626748a2a00068dbbd5836d19076637b4e235baffected
LinuxLinux457f44363a8894135c85b7a9afd2bd8196db24ab < de2ce6b14bc3e565708a39bdba3ef9162aeffc72affected
LinuxLinux457f44363a8894135c85b7a9afd2bd8196db24ab < e1828c7a8d8135e21ff6adaaa9458c32aae13b11affected
LinuxLinux457f44363a8894135c85b7a9afd2bd8196db24ab < 6451141103547f4efd774e912418a3b4318046c6affected
LinuxLinux457f44363a8894135c85b7a9afd2bd8196db24ab < 10ca3b2eec384628bc9f5d8190aed9427ad2dde6affected
LinuxLinux457f44363a8894135c85b7a9afd2bd8196db24ab < 430e15544f11f8de26b2b5109c7152f71b78295eaffected
LinuxLinux457f44363a8894135c85b7a9afd2bd8196db24ab < 4e9077638301816a7d73fa1e1b4c1db4a7e3b59caffected
LinuxLinux5.8affected
LinuxLinux0 < 5.8unaffected
LinuxLinux5.10.247 <= 5.10.*unaffected
LinuxLinux5.15.197 <= 5.15.*unaffected
LinuxLinux6.1.159 <= 6.1.*unaffected
LinuxLinux6.6.117 <= 6.6.*unaffected
LinuxLinux6.12.58 <= 6.12.*unaffected
LinuxLinux6.17.8 <= 6.17.*unaffected
LinuxLinux6.18 <= *unaffected

Weaknesses

References