Description
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.
References7
- git.kernel.org/stable/c/10ca3b2eec384628bc9f5d8190aed9427ad2dde6
- git.kernel.org/stable/c/430e15544f11f8de26b2b5109c7152f71b78295e
- git.kernel.org/stable/c/47626748a2a00068dbbd5836d19076637b4e235b
- git.kernel.org/stable/c/4e9077638301816a7d73fa1e1b4c1db4a7e3b59c
- git.kernel.org/stable/c/6451141103547f4efd774e912418a3b4318046c6
- git.kernel.org/stable/c/de2ce6b14bc3e565708a39bdba3ef9162aeffc72
- git.kernel.org/stable/c/e1828c7a8d8135e21ff6adaaa9458c32aae13b11
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 11 November 2026
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