CVE-2026-52923

Vulnerability overview

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...

Affected product and versions

Product

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

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 versions

5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.93, 6.18.35, 7.0.12

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-401, CWE-825