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Ubuntu Linux CVE-2026-47333

| EUVD-2026-32988 HIGH
Out-of-bounds Read (CWE-125)
2026-05-28 canonical
Buffer Overflow Information Disclosure Ubuntu
7.8
CVSS 3.1
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CVSS VectorNVD

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

Lifecycle Timeline

2
Analysis Generated
May 28, 2026 - 19:21 vuln.today
CVE Published
May 28, 2026 - 18:28 nvd
HIGH 7.8

DescriptionNVD

Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the size of an internal buffer, leading to a heap memory out-of-bounds read in notification handling code. The bug can be triggered by an unprivileged local user and can result in invalid data being processed by the AppArmor DFA policy engine.

AnalysisAI

Out-of-bounds heap read in Ubuntu Linux kernels 6.8, 6.17, and 7.0 stems from AppArmor SAUCE patches miscomputing an internal buffer size during notification handling, allowing an unprivileged local user to feed invalid data into the AppArmor DFA policy engine. The flaw carries a CVSS 7.8 (high) and currently has no public exploit identified at time of analysis, though Canonical has shipped an upstream kernel fix. …

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RemediationAI

Within 24 hours: Audit systems running Ubuntu Linux kernels 6.8, 6.17, or 7.0. Within 7 days: Deploy Canonical-released kernel security updates to all affected systems and schedule maintenance reboots. …

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CVE-2026-47333 vulnerability details – vuln.today
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