CVE-2025-40364
CVE-2025-40364 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (14th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-11841
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
In the Linux kernel, the following vulnerability has been resolved: io_uring: fix io_req_prep_async with provided buffers io_req_prep_async() can import provided buffers, commit the ring state by giving up on that before, it'll be reimported later if needed.
Frequently asked questions
- What is CVE-2025-40364?
- In the Linux kernel, the following vulnerability has been resolved: io_uring: fix io_req_prep_async with provided buffers io_req_prep_async() can import provided buffers, commit the ring state by giving up on that before, it'll be reimported later if needed.
- How severe is CVE-2025-40364?
- CVE-2025-40364 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-40364 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-40364?
- CVE-2025-40364 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-40364?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-40364 have an EU (EUVD) identifier?
- Yes. CVE-2025-40364 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11841.
- When was CVE-2025-40364 published?
- CVE-2025-40364 was published on 2025-04-18 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/233b210a678bddf8b49b02a070074a52b87e6d43
- https://git.kernel.org/stable/c/35ae7910c349fb3c60439992e2e0e79061e95382
- https://git.kernel.org/stable/c/a1b17713b32c75a90132ea2f92b1257f3bbc20f3
- https://git.kernel.org/stable/c/a94592ec30ff67dc36c424327f1e0a9ceeeb9bd3
- https://git.kernel.org/stable/c/b86f1d51731e621e83305dc9564ae14c9ef752bf
- https://git.kernel.org/stable/c/d63b0e8a628e62ca85a0f7915230186bb92f8bb4
- https://git.kernel.org/stable/c/f0ef94553868d07c1b14d7743a7e2553e5a831a3
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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