CVE-2025-40364

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-04-18. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

April 18, 2025

Last Modified

August 5, 2026

Advisory Details (7)

Auto-updated Jul 30, 2026
No patch confirmed yet.
generic

io_uring: fix multishots with selected buffers - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f0ef94553868d07c1b14d7743a7e2553e5a831a3
generic

io_uring: fix multishots with selected buffers - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d63b0e8a628e62ca85a0f7915230186bb92f8bb4
generic

io_uring: fix multishots with selected buffers - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b86f1d51731e621e83305dc9564ae14c9ef752bf
generic

io_uring: fix io_req_prep_async with provided buffers - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a94592ec30ff67dc36c424327f1e0a9ceeeb9bd3
generic

io_uring: fix io_req_prep_async with provided buffers - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a1b17713b32c75a90132ea2f92b1257f3bbc20f3
generic

io_uring: fix multishots with selected buffers - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/35ae7910c349fb3c60439992e2e0e79061e95382
generic

io_uring: fix multishots with selected buffers - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/233b210a678bddf8b49b02a070074a52b87e6d43

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 6.1.129—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Data Freshness Timeline

(refreshed 8× in last 7d / 42× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 106 total refreshes for this CVE.

  1. 2026-08-07 16:26 UTCEPSS rescore
  2. 2026-08-06 13:46 UTCEPSS rescore
  3. 2026-08-05 13:57 UTCEG score recompute
  4. 2026-08-05 13:57 UTCGHSA enrichment
  5. 2026-08-04 15:09 UTCEPSS rescore
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  10. 2026-07-30 16:27 UTCEPSS rescore
  11. 2026-07-30 07:13 UTCEG score recompute
  12. 2026-07-30 07:13 UTCGHSA enrichment
  13. 2026-07-30 01:29 UTCEPSS rescore
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  19. 2026-07-24 08:11 UTCOSV refresh
  20. 2026-07-23 02:55 UTCEG score recompute
  21. 2026-07-22 14:07 UTCEPSS rescore
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  23. 2026-07-20 17:07 UTCEPSS rescore
  24. 2026-07-19 14:30 UTCEPSS rescore
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  1. 2026-07-19 02:28 UTCEPSS rescore
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  18. 2026-07-07 13:45 UTCEPSS rescore
  19. 2026-07-07 03:51 UTCOSV refresh
  20. 2026-07-06 16:27 UTCEPSS rescore
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  49. 2026-06-19 19:25 UTCEPSS rescore
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  51. 2026-06-18 17:52 UTCEPSS rescore
  52. 2026-06-18 17:52 UTCEPSS rescore
  53. 2026-06-18 15:05 UTCOSV refresh
  54. 2026-06-17 17:52 UTCEPSS rescore
  55. 2026-06-16 17:52 UTCEPSS rescore
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  57. 2026-06-14 23:17 UTCEPSS rescore
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  73. 2026-06-01 13:51 UTCEPSS rescore
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  75. 2026-05-31 22:30 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2025-40364?
CVE-2025-40364 is a high vulnerability published on April 18, 2025. In the Linux kernel, the following vulnerability has been resolved: iouring: fix ioreqprepasync with provided buffers ioreqprep_async() can import provided buffers, commit the ring state by giving up on that before, it'll be reimported later if needed.
When was CVE-2025-40364 disclosed?
CVE-2025-40364 was first published in the National Vulnerability Database on April 18, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-40364 actively exploited?
CVE-2025-40364 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 81.3% of all scored CVEs.
What is the CVSS score of CVE-2025-40364?
CVE-2025-40364 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2025-40364?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-40364, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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