CVE-2026-43366 Affecting kernel-default-base package, versions <6.4.0-150600.23.112.1.150600.12.52.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-SLES156-KERNELDEFAULTBASE-17123782
  • published2 Jun 2026
  • disclosed1 Jul 2026

Introduced: 2 Jun 2026

CVE-2026-43366  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 kernel-default-base to version 6.4.0-150600.23.112.1.150600.12.52.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default-base package and not the kernel-default-base package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1