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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-43366 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: check if target buffer list is still legacy on recycle There's a gap between when the buffer was grabbed and when it potentially gets recycled, where if the list is empty, someone could've upgraded it to a ring provided type. This can happen if the request is forced via io-wq. The legacy recycling is missing checking if the buffer_list still exists, and if it's of the correct type. Add those checks.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/439a6728ec4641ffad1ca796622c19bc525e570f kernel.org Patch 
https://git.kernel.org/stable/c/50ad880db3013c6fee0ef13781762a39e2e7ef83 kernel.org Patch 
https://git.kernel.org/stable/c/97b57f69fee1b61b41acbf37e7720cac9d389fa4 kernel.org Patch 
https://git.kernel.org/stable/c/a7b33671e418fca507feebd1d56e7f4952a4b25c kernel.org Patch 
https://git.kernel.org/stable/c/c2c185be5c85d37215397c8e8781abf0a69bec1f kernel.org Patch 
https://git.kernel.org/stable/c/f3fb54e7a8b4aadcc2836ee463eec8c88709b8aa kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-43366
NVD Published Date:
05/08/2026
NVD Last Modified:
05/15/2026
Source:
kernel.org