CVE-2025-40319
HighIn 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.
CVSS 3.1 score
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected versions
Linux kernel versions
5.8
and later are affected. Fixed in
5.10.247,
5.15.197,
6.1.159,
6.6.117,
6.12.58,
6.17.8,
6.18
and their respective stable series.
References
7 totalFrequently asked questions
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What is CVE-2025-40319?
CVE-2025-40319 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 5.8 onward and has been patched in 5.10.247, 5.15.197, 6.1.159 and others. CVE-2025-40319 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2025-40319?
CVE-2025-40319 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. -
Is there a patch available for CVE-2025-40319?
Yes. CVE-2025-40319 has been patched. Fixed versions include 5.10.247, 5.15.197, 6.1.159 and others. If you are running Linux kernel 5.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40319 actively exploited?
No. CVE-2025-40319 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.