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CVE-2026-43174

io_uring/zcrx: fix post open error handling

MEDIUM
5.5
CVSS Score
Published: May 6, 2026 at 11:27 AM UTC
Updated: June 17, 2026 at 10:49 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.15 ≤ v < 6.19.66.15 ≤ v < 7.06.15e0793de24a9f610bd8ce106f7033b3966e7fca0e
Vendor states this is fixed in 18afaff077b46655a8eb6fd7f6de1b81327be577 (fixed)
Vendor states this is fixed in 5d540e4508950c674d6feef1d95463d039bbf4f5 (fixed)
Vendor states this is fixed in 6.15 (unaffected)
Vendor states this is fixed in 6.19.6 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Patch
Source: cverecord
https://git.kernel.org/stable/c/18afaff077b46655a8eb6fd7f6de1b81327be577
Patch
Source: cverecord
https://git.kernel.org/stable/c/5d540e4508950c674d6feef1d95463d039bbf4f5

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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