In the Linux kernel, the following vulnerability has been resolved:

io_uring/zcrx: fix user_struct uaf

io_free_rbuf_ring() usees a struct user_struct, which
io_zcrx_ifq_free() puts it down before destroying the ring.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
5c686456a4e83ef06c74d40be05c21a0ef136684 affected < 9feb88eeda6d288f93fcfb6bca563f89e316479d
5c686456a4e83ef06c74d40be05c21a0ef136684 affected < 0fcccfd87152f957fa8312b841f6efef42a05a20
Linux Linux affected
Version Status Constraints
6.19 affected —
0 unaffected < 6.19
7.0.4 unaffected ≤ 7.0.*
7.1-rc1 unaffected ≤ *

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No data.

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Fixes

Solution

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Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0fcccfd87152f957fa8312b841f6efef42a05a20 cve-icon cve-icon
https://git.kernel.org/stable/c/9feb88eeda6d288f93fcfb6bca563f89e316479d cve-icon cve-icon
History

Wed, 27 May 2026 17:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416

Wed, 27 May 2026 14:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix user_struct uaf io_free_rbuf_ring() usees a struct user_struct, which io_zcrx_ifq_free() puts it down before destroying the ring.
Title io_uring/zcrx: fix user_struct uaf
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-05-27T12:55:48.587Z

Reserved: 2026-05-13T15:03:33.091Z

Link: CVE-2026-45995

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-27T14:17:17.080

Modified: 2026-05-27T14:48:03.013

Link: CVE-2026-45995

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T17:15:38Z

Weaknesses