CVE-2026-63828: apparmor: mediate the implicit connect of TCP fast open sendmsg
Published Jul 19, 2026
·Updated
apparmor: mediate the implicit connect of TCP fast open sendmsg
Affected Software
2 affected componentsFixes available
Linux Linux kernel
Microsoft azl3 kernel 6.6.143.1-1<6.6.150.1-1
6.6.150.1-1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.150.1-1
Event History
Jul 19, 2026
CVE Published
via MITRE·12:02 PM
Data Sourced
via MITRE·12:02 PM
DescriptionSeverity
Data Sourced
via NVD·12:16 PM
DescriptionSeverity
Jul 20, 2026
Data Sourced
via Microsoft·08:07 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-63828?
The severity of CVE-2026-63828 is rated as high with a CVSS score of 8.4.
2
How do I fix CVE-2026-63828?
To fix CVE-2026-63828, you should update your Linux kernel to the latest patched version provided by your distribution.
3
What systems are affected by CVE-2026-63828?
CVE-2026-63828 affects systems running vulnerable versions of the Linux kernel that utilize AppArmor.
4
What is the impact of CVE-2026-63828?
The impact of CVE-2026-63828 allows unauthorized implicit TCP connections, which can lead to potential data leakage.
5
When was CVE-2026-63828 published?
CVE-2026-63828 was published on July 19, 2026.