CVE-2025-38730

Advisory lineage Upstream: 0 Downstream: 41
Analyzed
Published: 04 Sept 2025, 15:33
Last modified:11 May 2026, 21:33

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability +0.01%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

04 Sept 2025, 15:33
Published
Vulnerability first disclosed
11 May 2026, 21:33
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring/net: commit partial buffers on retry Ring provided buffers are potentially only valid within the single execution context in which they were acquired. io_uring deals with this and invalidates them on retry. But on the networking side, if MSG_WAITALL is set, or if the socket is of the streaming type and too little was processed, then it will hang on to the buffer rather than recycle or commit it. This is problematic for two reasons: 1) If someone unregisters the provided buffer ring before a later retry, then the req->buf_list will no longer be valid. 2) If multiple sockers are using the same buffer group, then multiple receives can consume the same memory. This can cause data corruption in the application, as either receive could land in the same userspace buffer. Fix this by disallowing partial retries from pinning a provided buffer across multiple executions, if ring provided buffers are used.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 7%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • linux•linux

    ≥ c56e022c0a27142b7b59ae6bdf45f86bf4b298a1, < 3b53dc1c641f2884d4750fc25aaf6c36b90db606 | ≥ c56e022c0a27142b7b59ae6bdf45f86bf4b298a1, < fe9da1812f8697a38f7e30991d568ec199e16059 | ≥ c56e022c0a27142b7b59ae6bdf45f86bf4b298a1, < 21a4ddb0f5e933f372808c10b9ac704505751bb1 | ≥ c56e022c0a27142b7b59ae6bdf45f86bf4b298a1, < 2eb7937b5fc7fcd90eab7bebb0181214b61b9283 | ≥ c56e022c0a27142b7b59ae6bdf45f86bf4b298a1, < 41b70df5b38bc80967d2e0ed55cc3c3896bba781 | 6.4

  • linux•linux_kernel

    ≥ 6.4, < 6.6.103 | ≥ 6.7, < 6.12.44 | ≥ 6.13, < 6.15.11 | ≥ 6.16, < 6.16.2 | 6.17:rc1

References (5)