Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 457f44363a8894135c85b7a9afd2bd8196db24ab before 47626748a2a00068dbbd5836d19076637b4e235b; affected 457f44363a8894135c85b7a9afd2bd8196db24ab before de2ce6b14bc3e565708a39bdba3ef9162aeffc72; affected 457f44363a8894135c85b7a9afd2bd8196db24ab before e1828c7a8d8135e21ff6adaaa9458c32aae13b11; affected 457f44363a8894135c85b7a9afd2bd8196db24ab before 6451141103547f4efd774e912418a3b4318046c6; affected 457f44363a8894135c85b7a9afd2bd8196db24ab before 10ca3b2eec384628bc9f5d8190aed9427ad2dde6; affected 457f44363a8894135c85b7a9afd2bd8196db24ab before 430e15544f11f8de26b2b5109c7152f71b78295e; affected 457f44363a8894135c85b7a9afd2bd8196db24ab before 4e9077638301816a7d73fa1e1b4c1db4a7e3b59c |
| Linux / Linux | affected 5.8; unaffected 0 before 5.8; unaffected 5.10.247 through 5.10.*; unaffected 5.15.197 through 5.15.*; unaffected 6.1.159 through 6.1.*; unaffected 6.6.117 through 6.6.*; unaffected 6.12.58 through 6.12.*; unaffected 6.17.8 through 6.17.*; unaffected 6.18 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/47626748a2a00068dbbd5836d19076637b4e235b
- https://git.kernel.org/stable/c/de2ce6b14bc3e565708a39bdba3ef9162aeffc72
- https://git.kernel.org/stable/c/e1828c7a8d8135e21ff6adaaa9458c32aae13b11
- https://git.kernel.org/stable/c/6451141103547f4efd774e912418a3b4318046c6
- https://git.kernel.org/stable/c/10ca3b2eec384628bc9f5d8190aed9427ad2dde6
- https://git.kernel.org/stable/c/430e15544f11f8de26b2b5109c7152f71b78295e
- https://git.kernel.org/stable/c/4e9077638301816a7d73fa1e1b4c1db4a7e3b59c
ADP enrichment
No English description supplied.
No references supplied.