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Ubuntu Linux CVE-2026-47328

| EUVD-2026-32983 MEDIUM
Free of Memory not on the Heap (CWE-590)
2026-05-28 canonical GHSA-5x7q-wm95-r63c
Denial Of Service Ubuntu Ubuntu Linux
6.1
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High

Lifecycle Timeline

2
Analysis Generated
May 28, 2026 - 19:26 vuln.today
CVE Published
May 28, 2026 - 18:27 nvd
MEDIUM 6.1

DescriptionNVD

Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly attempt to free a pointer which was not previously kmalloc()d, while at the same time leaking allocated memory. The bug can be triggered by an unprivileged local user and can result in the corruption of slab metadata and could lead to resource exhaustion.

AnalysisAI

Ubuntu Linux kernels 6.8, 6.17, and 7.0 ship Ubuntu-specific AppArmor SAUCE patches that incorrectly call kfree() on a pointer never allocated via kmalloc(), while simultaneously leaking the legitimately allocated memory. Any unprivileged local user can trigger this kernel memory management flaw, corrupting slab allocator metadata and driving the system toward resource exhaustion or instability. …

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CVE-2026-47328 vulnerability details – vuln.today
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