Medium 5.5Published May 6, 2026

CVE-2026-43174io_uring/zcrx: fix post open error handling

Updated under an hour ago (Oct 27, 2026, 12:00 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix post open error handling Closing a queue doesn't guarantee that all associated page pools are terminated right away, let the refcounting do the work instead of releasing the zcrx ctx directly.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from e0793de24a9f610bd8ce106f7033b3966e7fca0e before 18afaff077b46655a8eb6fd7f6de1b81327be577; from e0793de24a9f610bd8ce106f7033b3966e7fca0e before 5d540e4508950c674d6feef1d95463d039bbf4f5	CNA record
linux linux_kernel linux:linux_kernel	from 6.15 before 6.19.6	NVD

References

References

https://git.kernel.org/stable/c/18afaff077b46655a8eb6fd7f6de1b81327be577	patch
https://git.kernel.org/stable/c/5d540e4508950c674d6feef1d95463d039bbf4f5	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.