Incorrect socket mediation via uninitialized variable
Published May 28, 2026 · Updated May 28, 2026
Use of an uninitialized variable in Ubuntu Linux 6.8 AppArmor socket mediation allows local users to alter fine-grained network policy processing. The AF_INET/AF_INET6 mediation path reads a variable before initialization while evaluating network socket rules, making the fine-grained policy result indeterminate. An unprivileged local account must trigger the path; the bounded impact is incorrect enforcement of fine-grained socket policy, not disclosure or service interruption.
Summary
What happened
Use of an uninitialized variable in Ubuntu Linux 6.8 AppArmor socket mediation allows local users to alter fine-grained network policy processing. The AF_INET/AF_INET6 mediation path reads a variable before initialization while evaluating network socket rules, making the fine-grained policy result indeterminate. An unprivileged local account must trigger the path; the bounded impact is incorrect enforcement of fine-grained socket policy, not disclosure or service interruption.
The record
- CVE
- CVE-2026-47336
- Published
- May 28, 2026
- Updated
- May 28, 2026
- Vendor
- Canonical
- Product
- Ubuntu
- Classifications
- CWE-457, T1562.001
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 28, 2026CVE publishedPublication date reported by the CVE source.
- May 28, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=6.8.0 <6.8.0-124.124
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo