CVE-2026-52923 remediation guide

Linux Linux, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

In the Linux kernel, the following vulnerability has been resolved: ipc: limit next_id allocation to the valid ID range The checkpoint/restore sysctl path can request the next SysV IPC id through ids->next_id. ipc_idr_alloc() currently forwards that request to idr_alloc() with an open-ended upper bound. If the valid tail of the SysV IPC id space is full, the allocation can spill beyond ipc_mni. The returned SysV IPC id still uses the normal index encoding, so later lookup and removal can target the wrong slot. This leaves the real IDR entry behind and breaks the IDR state for the object. Th...

Open CVE record

ProductLinux Linux, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Affected versions>= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < 3bbe2bb9111ce6967a951bfac79af142d816fae5, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < 8c58a92849175f5e2ab7bc2734b3b89afe79f6ef, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < af24e202b543ded8a34f1d5d3db54eb916173f04, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < 157ce2c6836ce0ff19108a819f38df061345425f, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < 41058d4c3f63ab64901560a704882e0565f4e456, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < a3cc795129e5ec0f8948653a3bf471e7d8852f5e, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < bd4be70669af55b974860d13680348cfdf50bbed, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < fa0b9b2b7ae3539908d69c2b9ac0d144d9bc5139, >= 3.8, >= 3.8.1 < 5.10.259, >= 5.11 < 5.15.210, >= 5.16 < 6.1.176, >= 6.2 < 6.6.143, >= 6.7 < 6.12.93, >= 6.13 < 6.18.35, >= 6.19 < 7.0.12, 3.8, 7.1

Fixed versions5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.93, 6.18.35, 7.0.12

Priority basisReview · CVSS 7.8 · EPSS 0.13%

Identify the affected asset

Confirm whether Linux Linux, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On is installed, record the deployed version and installation path, and identify exposed interfaces.

Record the product name, package or appliance identifier, and installed version.
Identify internet-facing, administrative, API, and internal access paths.
Preserve the pre-change configuration and relevant service logs.

Validate the affected-version match

Compare the deployed version with the affected range: >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < 3bbe2bb9111ce6967a951bfac79af142d816fae5, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < 8c58a92849175f5e2ab7bc2734b3b89afe79f6ef, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < af24e202b543ded8a34f1d5d3db54eb916173f04, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < 157ce2c6836ce0ff19108a819f38df061345425f, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < 41058d4c3f63ab64901560a704882e0565f4e456, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < a3cc795129e5ec0f8948653a3bf471e7d8852f5e, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < bd4be70669af55b974860d13680348cfdf50bbed, >= 03f595668017f1a1fb971c02fc37140bc6e7bb1c < fa0b9b2b7ae3539908d69c2b9ac0d144d9bc5139, >= 3.8, >= 3.8.1 < 5.10.259, >= 5.11 < 5.15.210, >= 5.16 < 6.1.176, >= 6.2 < 6.6.143, >= 6.7 < 6.12.93, >= 6.13 < 6.18.35, >= 6.19 < 7.0.12, 3.8, 7.1. Treat incomplete inventory results as unresolved.

Prioritize with independent signals

The CVSS severity warrants an early asset and exposure review. Combine this signal with asset criticality, exposure, compensating controls, and business impact.

Apply supported remediation

Follow the vendor advisory or supported update path. Current fixed-version status: 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.93, 6.18.35, 7.0.12. Preserve configuration and rollback material before change.

Verify the result

Confirm the resulting version, service health, authentication and access paths, monitoring coverage, and relevant security logs.

Confirm the expected version and package state.
Run a functional health check for critical service paths.
Review authentication, error, application, and security monitoring logs.
Reassess exposure if the supported fix cannot be applied.

Operational boundary

This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.