kernel: ipc: limit next_id allocation to the valid ID range

A flaw was found in the Linux kernel. The ipcidralloc function, used in the checkpoint/restore path for SysV Inter-Process Communication IPC ID allocation, does not properly limit ID allocation to the valid range. This can result in the system attempting to dereference freed memory, leading to a...

ipc: limit next_id allocation to the valid ID range

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CVE-2026-52923 ipc: limit next_id allocation to the valid ID range

In the Linux kernel, the following vulnerability has been resolved: ipc: limit nextid allocation to the valid ID range The checkpoint/restore sysctl path can request the next SysV IPC id through ids-nextid. ipcidralloc currently forwards that request to idralloc with an open-ended upper bound. If...

CVE-2026-52923

In the Linux kernel, the following vulnerability has been resolved: ipc: limit nextid allocation to the valid ID range The checkpoint/restore sysctl path can request the next SysV IPC id through ids-nextid. ipcidralloc currently forwards that request to idralloc with an open-ended upper bound. If...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005108)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005108 advisory. In the Linux kernel, the following vulnerability has been resolved: memcg: protect concurrent access to memcgroupidr Commit 73f576c04b94 mm: memcontrol: fix cgroup...

CVE-2022-49436 powerpc/papr_scm: Fix leaking nvdimm_events_map elements

In the Linux kernel, the following vulnerability has been resolved: powerpc/paprscm: Fix leaking nvdimmeventsmap elements Right now 'char ' elements allocated for individual 'statid' in 'paprscmpriv.nvdimmeventsmap' during paprscmpmucheckevents, get leaked in paprscmremove and paprscmpmuregister,...

UBUNTU-CVE-2024-43892

In the Linux kernel, the following vulnerability has been resolved: memcg: protect concurrent access to memcgroupidr Commit 73f576c04b94 "mm: memcontrol: fix cgroup creation failure after many small jobs" decoupled the memcg IDs from the CSS ID space to fix the cgroup creation failures. It...